13,431
13,431 is a composite number, odd.
13,431 (thirteen thousand four hundred thirty-one) is an odd 5-digit number. It is a composite number with 12 divisors, and factors as 3 × 11² × 37. Its digits read the same forwards and backwards, so it is a palindromic number. Written other ways, in hexadecimal, 0x3477.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 12
- Digit product
- 36
- Digital root
- 3
- Palindrome
- Yes
- Bit width
- 14 bits
- Recamán's sequence
- a(47,413) = 13,431
- Square (n²)
- 180,391,761
- Cube (n³)
- 2,422,841,741,991
- Divisor count
- 12
- σ(n) — sum of divisors
- 20,216
- φ(n) — Euler's totient
- 7,920
- Sum of prime factors
- 62
Primality
Prime factorization: 3 × 11 2 × 37
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,431 = [115; (1, 8, 3, 1, 1, 1, 2, 6, 2, 3, 1, 1, 7, 6, 7, 1, 1, 3, 2, 6, 2, 1, 1, 1, …)]
Period length 28 — the block in parentheses repeats forever.
Representations
- In words
- thirteen thousand four hundred thirty-one
- Ordinal
- 13431st
- Binary
- 11010001110111
- Octal
- 32167
- Hexadecimal
- 0x3477
- Base64
- NHc=
- One's complement
- 52,104 (16-bit)
- Scientific notation
- 1.3431 × 10⁴
- As a duration
- 13,431 s = 3 hours, 43 minutes, 51 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ιγυλαʹ
- Mayan (base 20)
- 𝋡·𝋭·𝋫·𝋫
- Chinese
- 一萬三千四百三十一
- Chinese (financial)
- 壹萬參仟肆佰參拾壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,431 = 9
- e — Euler's number (e)
- Digit 13,431 = 9
- φ — Golden ratio (φ)
- Digit 13,431 = 9
- √2 — Pythagoras's (√2)
- Digit 13,431 = 5
- ln 2 — Natural log of 2
- Digit 13,431 = 9
- γ — Euler-Mascheroni (γ)
- Digit 13,431 = 9
Also seen as
UTF-8 encoding: E3 91 B7 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.52.119.
- Address
- 0.0.52.119
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.52.119
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,431 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯9 (13289.8 Hz, +18¢)
- Scientific pitch (C4 = 256 Hz): A9 (13777.2 Hz, -44¢)
- Baroque pitch (A4 = 415 Hz): A9 (13280 Hz, +20¢)
The digit sequence 13431 first appears in π at position 24,692 of the decimal expansion (the 24,692ordinal-suffix:nd 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.