# Number 31

Number 31 spell 🔊, write in words: thirty-one . Ordinal number 31th is said 🔊 and write: thirty-first. Phone prefix +31 or 0031. The meaning of number 31 in Maths: Is Prime? Factorization and dividers. The square root and cube root of 31. The meaning in computer science, numerology, codes and images, writing and naming in other languages, other interesting facts, news.

## Useful information about number 31

The decimal (Arabic) number 31 converted to a Roman number is XXXI. Roman and decimal number conversions.
 The number 31 converted to a Mayan number is Decimal and Mayan number conversions.

#### Weight conversion

31 kilograms (kg) = 68.3 pounds (lb)
31 pounds (lb) = 14.1 kilograms (kg)

#### Length conversion

31 kilometers (km) equals to 19.263 miles (mi).
31 miles (mi) equals to 49.890 kilometers (km).
31 meters (m) equals to 49.890 feet (ft).
31 feet (ft) equals 9.449 meters (m).
31 centimeters (cm) equals to 12.2 inches (in).
31 inches (in) equals to 78.7 centimeters (cm).

#### Temperature conversion

31° Fahrenheit (°F) equals to -0.6° Celsius (°C)
31° Celsius (°C) equals to 87.8° Fahrenheit (°F)

#### Power conversion

31 Horsepower (hp) equals to 22.80 kilowatts (kW)
31 kilowatts (kW) equals to 42.15 horsepower (hp)

### Codes and images of the number 31

Number 31 morse code: ...-- .----
Sign language for number 31:  Images of the number Image (1) of the number Image (2) of the number  There is no copyright for these images. Number 31 infographic. More images, other sizes, codes and colors ...

### Gregorian, Hebrew, Islamic, Persian and Buddhist year (calendar)

Gregorian year 31 is Buddhist year 574.
Buddhist year 31 is Gregorian year 512 a. C.
Gregorian year 31 is Islamic year -609 or -608.
Islamic year 31 is Gregorian year 651 or 652.
Gregorian year 31 is Persian year -592 or -591.
Persian year 31 is Gregorian 652 or 653.
Gregorian year 31 is Hebrew year 3791 or 3792.
Hebrew year 31 is Gregorian year 3729 a. C.
The Buddhist calendar is used in Sri Lanka, Cambodia, Laos, Thailand, and Burma. The Persian calendar is official in Iran and Afghanistan.

## Share in social networks ## Mathematics of no. 31

### Multiplications

#### Multiplication table of 31

31 multiplied by two equals 62 (31 x 2 = 62).
31 multiplied by three equals 93 (31 x 3 = 93).
31 multiplied by four equals 124 (31 x 4 = 124).
31 multiplied by five equals 155 (31 x 5 = 155).
31 multiplied by six equals 186 (31 x 6 = 186).
31 multiplied by seven equals 217 (31 x 7 = 217).
31 multiplied by eight equals 248 (31 x 8 = 248).
31 multiplied by nine equals 279 (31 x 9 = 279).
show multiplications by 6, 7, 8, 9 ...

### Fractions: decimal fraction and common fraction

#### Fraction table of 31

Half of 31 is 15,5 (31 / 2 = 15,5 = 15 1/2).
One third of 31 is 10,3333 (31 / 3 = 10,3333 = 10 1/3).
One quarter of 31 is 7,75 (31 / 4 = 7,75 = 7 3/4).
One fifth of 31 is 6,2 (31 / 5 = 6,2 = 6 1/5).
One sixth of 31 is 5,1667 (31 / 6 = 5,1667 = 5 1/6).
One seventh of 31 is 4,4286 (31 / 7 = 4,4286 = 4 3/7).
One eighth of 31 is 3,875 (31 / 8 = 3,875 = 3 7/8).
One ninth of 31 is 3,4444 (31 / 9 = 3,4444 = 3 4/9).
show fractions by 6, 7, 8, 9 ...

### Calculator

 31

#### Is Prime?

The number 31 is a prime number. The closest prime numbers are 29, 37.
31th prime number in order is 127.

#### Factorization and dividers

Factorization 31 = 31
Divisors of number 31 are 1 , 31
Total Divisors 2.
Sum of Divisors 32.

#### Powers

The second power of 312 is 961.
The third power of 313 is 29.791.

#### Roots

The square root √31 is 5,567764.
The cube root of 331 is 3,141381.

#### Logarithms

The natural logarithm of No. ln 31 = loge 31 = 3,433987.
The logarithm to base 10 of No. log10 31 = 1,491362.
The Napierian logarithm of No. log1/e 31 = -3,433987.

### Trigonometric functions

The cosine of 31 is 0,914742.
The sine of 31 is -0,404038.
The tangent of 31 is -0,441696.

### Properties of the number 31

Is a Friedman number: No
Is a Fibonacci number: No
Is a Bell number: No
Is a palindromic number: No
Is a pentagonal number: No
Is a perfect number: No

## Number 31 in Computer Science

Code typeCode value
Unix timeUnix time 31 is equal to Thursday Jan. 1, 1970, 12:31 a.m. GMT
IPv4, IPv6Number 31 internet address in dotted format v4 0.0.0.31, v6 ::1f
31 Decimal = 11111 Binary
31 Decimal = 1011 Ternary
31 Decimal = 37 Octal
31 Decimal = 1F Hexadecimal (0x1f hex)
31 BASE64MzE=
31 MD5c16a5320fa475530d9583c34fd356ef5
31 SHA1632667547e7cd3e0466547863e1207a8c0c0c549
31 SHA224c05730c3a7a2dbef1693c0299929166dd379d9b57a1ddc5024aa2b48
31 SHA256eb1e33e8a81b697b75855af6bfcdbcbf7cbbde9f94962ceaec1ed8af21f5a50f
31 SHA38463eba807c25331f128c471c835447eed6b450dd0b3887234e6810a2ffdbfa30b71c7c286ea35e5e6642827dcf65a7bc8
More SHA codes related to the number 31 ...

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## Numerology 31

### The meaning of the number 3 (three), numerology 3

Character frequency 3: 1

The number three (3) came to share genuine expression and sensitivity with the world. People associated with this number need to connect with their deepest emotions. The number 3 is characterized by its pragmatism, it is utilitarian, sagacious, dynamic, creative, it has objectives and it fulfills them. He/she is also self-expressive in many ways and with communication skills.
More about the meaning of the number 3 (three), numerology 3 ...

### The meaning of the number 1 (one), numerology 1

Character frequency 1: 1

Number one (1) came to develop or balance creativity, independence, originality, self-reliance and confidence in the world. It reflects power, creative strength, quick mind, drive and ambition. It is the sign of individualistic and aggressive nature.
More about the meaning of the number 1 (one), numerology 1 ...

## Interesting facts about the number 31

### Asteroids

• (31) Euphrosyne is asteroid number 31. It was discovered by J. Ferguson from Obs. United States Naval on 9/1/1854.

### Areas, mountains and surfaces

• The total area of Berkner Island is 16,939 square miles (43,873 square km). Country None (Antarctic territorial claims by Argentina, Chile (partial) and United Kingdom). 31th largest island in the world.

### Distances between cities

• There is a 31 miles (49 km) direct distance between Bogor (Indonesia) and Tangerang (Indonesia).
• There is a 20 miles (31 km) direct distance between Bucheon-si (South Korea) and Seongnam-si (South Korea).

### Games

• Pokémon Nidoqueen (Nidokuin) is a Pokémon number # 031 of the National Pokédex. Nidoqueen is poison and ground type Pokémon in the first generation. It is an egg group Pokémon None. The indexes ontros of Nidoqueen are Johto index 097 , Kalos Center index 106 - Pokédex Coastal Zone.

### Mathematics

• 31 is a Mersenne prime.

### Mobile and telephony

• Number 31 or +31 or 0031 is a dial the international call prefix for Netherlands. (00/+) is dial the international call prefix.

### Science

• Gallium is the chemical element in the periodic table that has the symbol Ga and atomic number 31.

### Sports

• The best athletes to wear number 31
Greg Maddux, MLB; Reggie Miller, NBA; Fergie Jenkins, MLB; Dave Winfield, MLB; Billy Smith, NHL; Mike Piazza, MLB; Donnie Shell, NFL

## Number 31 in other languages

How to say or write the number thirty-one in Spanish, German, French and other languages.
 Spanish: 🔊 (número 31) treinta y uno German: 🔊 (Anzahl 31) einunddreißig French: 🔊 (nombre 31) trente et un Portuguese: 🔊 (número 31) trinta e um Chinese: 🔊 (数 31) 三十一 Arabian: 🔊 (عدد 31) واحد و ثلاثون Czech: 🔊 (číslo 31) třicet jedna Korean: 🔊 (번호 31) 삼십일 Danish: 🔊 (nummer 31) enogtredive Hebrew: (מספר 31) שלשים ואחד Dutch: 🔊 (nummer 31) eenendertig Japanese: 🔊 (数 31) 三十一 Indonesian: 🔊 (jumlah 31) tiga puluh satu Italian: 🔊 (numero 31) trentuno Norwegian: 🔊 (nummer 31) tretti-en Polish: 🔊 (liczba 31) trzydzieści jeden Russian: 🔊 (номер 31) тридцать один Turkish: 🔊 (numara 31) otuzbir Thai: 🔊 (จำนวน 31) สามสิบเอ็ด Ukrainian: 🔊 (номер 31) тридцять одна Vietnamese: 🔊 (con số 31) ba mươi mốt Other languages ...

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