number.wiki
Number

31,481

31,481 is a prime, odd.

Cousin Prime Deficient Number Happy Number Prime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
17
Digital root
8
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
31,482

Primality

31,481 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 31481
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 31,481)
1 × 31481
First multiples
31,481 · 62,962 · 94,443 · 125,924 · 157,405 · 188,886 · 220,367 · 251,848 · 283,329 · 314,810

Representations

In words
thirty-one thousand four hundred eighty-one
Ordinal
31481st
Binary
111101011111001
Octal
75371
Hexadecimal
7AF9

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 31,477 (gap of 4)
  • Next prime: 31,489 (gap of 8)

Pair status: cousin with 31477.

Unicode codepoint
U+7AF9
Other letter (Lo)

UTF-8 encoding: E7 AB B9 (3 bytes).

Hex color
#007AF9
RGB(0, 122, 249)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.122.249.