31,142
31,142 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 11
- Digit product
- 24
- Digital root
- 2
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 24,113
- Recamán's sequence
- a(31,379) = 31,142
- Square (n²)
- 969,824,164
- Cube (n³)
- 30,202,264,115,288
- Divisor count
- 8
- σ(n) — sum of divisors
- 48,816
- φ(n) — Euler's totient
- 14,872
- Sum of prime factors
- 702
Primality
Prime factorization: 2 × 23 × 677
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- thirty-one thousand one hundred forty-two
- Ordinal
- 31142nd
- Binary
- 111100110100110
- Octal
- 74646
- Hexadecimal
- 0x79A6
- Base64
- eaY=
- One's complement
- 34,393 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵λαρμβʹ
- Mayan (base 20)
- 𝋣·𝋱·𝋱·𝋢
- Chinese
- 三萬一千一百四十二
- Chinese (financial)
- 參萬壹仟壹佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 31,142 = 4
- e — Euler's number (e)
- Digit 31,142 = 0
- φ — Golden ratio (φ)
- Digit 31,142 = 6
- √2 — Pythagoras's (√2)
- Digit 31,142 = 9
- ln 2 — Natural log of 2
- Digit 31,142 = 5
- γ — Euler-Mascheroni (γ)
- Digit 31,142 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 31142, here are decompositions:
- 3 + 31139 = 31142
- 19 + 31123 = 31142
- 61 + 31081 = 31142
- 73 + 31069 = 31142
- 79 + 31063 = 31142
- 103 + 31039 = 31142
- 109 + 31033 = 31142
- 193 + 30949 = 31142
Showing the first eight; more decompositions exist.
UTF-8 encoding: E7 A6 A6 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.121.166.
- Address
- 0.0.121.166
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.121.166
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 31142 first appears in π at position 52,715 of the decimal expansion (the 52,715ordinal-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.