31,420
31,420 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 10
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 2,413
- Recamán's sequence
- a(160,087) = 31,420
- Square (n²)
- 987,216,400
- Cube (n³)
- 31,018,339,288,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 66,024
- φ(n) — Euler's totient
- 12,560
- Sum of prime factors
- 1,580
Primality
Prime factorization: 2 2 × 5 × 1571
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- thirty-one thousand four hundred twenty
- Ordinal
- 31420th
- Binary
- 111101010111100
- Octal
- 75274
- Hexadecimal
- 0x7ABC
- Base64
- erw=
- One's complement
- 34,115 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵λαυκʹ
- Mayan (base 20)
- 𝋣·𝋲·𝋫·𝋠
- Chinese
- 三萬一千四百二十
- Chinese (financial)
- 參萬壹仟肆佰貳拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 31,420 = 3
- e — Euler's number (e)
- Digit 31,420 = 8
- φ — Golden ratio (φ)
- Digit 31,420 = 7
- √2 — Pythagoras's (√2)
- Digit 31,420 = 8
- ln 2 — Natural log of 2
- Digit 31,420 = 6
- γ — Euler-Mascheroni (γ)
- Digit 31,420 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 31420, here are decompositions:
- 23 + 31397 = 31420
- 29 + 31391 = 31420
- 41 + 31379 = 31420
- 83 + 31337 = 31420
- 101 + 31319 = 31420
- 113 + 31307 = 31420
- 149 + 31271 = 31420
- 167 + 31253 = 31420
Showing the first eight; more decompositions exist.
UTF-8 encoding: E7 AA BC (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.122.188.
- Address
- 0.0.122.188
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.122.188
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 31420 first appears in π at position 131,752 of the decimal expansion (the 131,752ordinal-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.