16,231
16,231 is a prime, odd.
16,231 (sixteen thousand two hundred thirty-one) is an odd 5-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x3F67.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 13
- Digit product
- 36
- Digital root
- 4
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 13,261
- Recamán's sequence
- a(18,250) = 16,231
- Square (n²)
- 263,445,361
- Cube (n³)
- 4,275,981,654,391
- Divisor count
- 2
- σ(n) — sum of divisors
- 16,232
- φ(n) — Euler's totient
- 16,230
Primality
16,231 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√16,231 = [127; (2, 2, 42, 14, 1, 27, 2, 1, 1, 1, 4, 1, 3, 1, 8, 1, 1, 1, 4, 2, 1, 13, 2, 7, …)]
Period length 56 — the block in parentheses repeats forever.
Representations
- In words
- sixteen thousand two hundred thirty-one
- Ordinal
- 16231st
- Binary
- 11111101100111
- Octal
- 37547
- Hexadecimal
- 0x3F67
- Base64
- P2c=
- One's complement
- 49,304 (16-bit)
- Scientific notation
- 1.6231 × 10⁴
- As a duration
- 16,231 s = 4 hours, 30 minutes, 31 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ιϛσλαʹ
- Mayan (base 20)
- 𝋢·𝋠·𝋫·𝋫
- Chinese
- 一萬六千二百三十一
- Chinese (financial)
- 壹萬陸仟貳佰參拾壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 16,231 = 0
- e — Euler's number (e)
- Digit 16,231 = 8
- φ — Golden ratio (φ)
- Digit 16,231 = 7
- √2 — Pythagoras's (√2)
- Digit 16,231 = 1
- ln 2 — Natural log of 2
- Digit 16,231 = 6
- γ — Euler-Mascheroni (γ)
- Digit 16,231 = 9
Also seen as
UTF-8 encoding: E3 BD A7 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.63.103.
- Address
- 0.0.63.103
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.63.103
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 16,231 Hz is closest to:
- Concert pitch (A4 = 440 Hz): B9 (15804.3 Hz, +46¢ — about midway to C10)
- Scientific pitch (C4 = 256 Hz): C10 (16384 Hz, -16¢)
- Baroque pitch (A4 = 415 Hz): C10 (15792.7 Hz, +47¢ — about midway to C♯10)
The digit sequence 16231 first appears in π at position 6,316 of the decimal expansion (the 6,316ordinal-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
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.