13,031
13,031 is a composite number, odd.
13,031 (thirteen thousand thirty-one) is an odd 5-digit number. It is a composite number with 4 divisors, and factors as 83 × 157. Its digits read the same forwards and backwards, so it is a palindromic number. Written other ways, in hexadecimal, 0x32E7.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 8
- Digit product
- 0
- Digital root
- 8
- Palindrome
- Yes
- Bit width
- 14 bits
- Recamán's sequence
- a(48,213) = 13,031
- Square (n²)
- 169,806,961
- Cube (n³)
- 2,212,754,508,791
- Divisor count
- 4
- σ(n) — sum of divisors
- 13,272
- φ(n) — Euler's totient
- 12,792
- Sum of prime factors
- 240
Primality
Prime factorization: 83 × 157
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,031 = [114; (6, 1, 1, 12, 1, 8, 4, 1, 5, 1, 2, 1, 1, 4, 11, 1, 3, 1, 15, 1, 1, 22, 3, 5, …)]
Period length 50 — the block in parentheses repeats forever.
Representations
- In words
- thirteen thousand thirty-one
- Ordinal
- 13031st
- Binary
- 11001011100111
- Octal
- 31347
- Hexadecimal
- 0x32E7
- Base64
- Muc=
- One's complement
- 52,504 (16-bit)
- Scientific notation
- 1.3031 × 10⁴
- As a duration
- 13,031 s = 3 hours, 37 minutes, 11 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ιγλαʹ
- Mayan (base 20)
- 𝋡·𝋬·𝋫·𝋫
- Chinese
- 一萬三千零三十一
- Chinese (financial)
- 壹萬參仟零參拾壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,031 = 7
- e — Euler's number (e)
- Digit 13,031 = 1
- φ — Golden ratio (φ)
- Digit 13,031 = 9
- √2 — Pythagoras's (√2)
- Digit 13,031 = 9
- ln 2 — Natural log of 2
- Digit 13,031 = 0
- γ — Euler-Mascheroni (γ)
- Digit 13,031 = 0
Also seen as
UTF-8 encoding: E3 8B A7 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.50.231.
- Address
- 0.0.50.231
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.50.231
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,031 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯9 (13289.8 Hz, -34¢)
- Scientific pitch (C4 = 256 Hz): G♯9 (13004 Hz, +4¢)
- Baroque pitch (A4 = 415 Hz): A9 (13280 Hz, -33¢)
The digit sequence 13031 first appears in π at position 9,107 of the decimal expansion (the 9,107ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.