31,442
31,442 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 14
- Digit product
- 96
- Digital root
- 5
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 24,413
- Recamán's sequence
- a(311,500) = 31,442
- Square (n²)
- 988,599,364
- Cube (n³)
- 31,083,541,202,888
- Divisor count
- 8
- σ(n) — sum of divisors
- 48,000
- φ(n) — Euler's totient
- 15,444
- Sum of prime factors
- 280
Primality
Prime factorization: 2 × 79 × 199
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- thirty-one thousand four hundred forty-two
- Ordinal
- 31442nd
- Binary
- 111101011010010
- Octal
- 75322
- Hexadecimal
- 0x7AD2
- Base64
- etI=
- One's complement
- 34,093 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵λαυμβʹ
- Mayan (base 20)
- 𝋣·𝋲·𝋬·𝋢
- Chinese
- 三萬一千四百四十二
- Chinese (financial)
- 參萬壹仟肆佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 31,442 = 7
- e — Euler's number (e)
- Digit 31,442 = 1
- φ — Golden ratio (φ)
- Digit 31,442 = 3
- √2 — Pythagoras's (√2)
- Digit 31,442 = 3
- ln 2 — Natural log of 2
- Digit 31,442 = 1
- γ — Euler-Mascheroni (γ)
- Digit 31,442 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 31442, here are decompositions:
- 109 + 31333 = 31442
- 193 + 31249 = 31442
- 211 + 31231 = 31442
- 223 + 31219 = 31442
- 283 + 31159 = 31442
- 373 + 31069 = 31442
- 379 + 31063 = 31442
- 409 + 31033 = 31442
Showing the first eight; more decompositions exist.
UTF-8 encoding: E7 AB 92 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.122.210.
- Address
- 0.0.122.210
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.122.210
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 31442 first appears in π at position 2,762 of the decimal expansion (the 2,762ordinal-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.