31,040
31,040 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 8
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 4,013
- Recamán's sequence
- a(31,583) = 31,040
- Square (n²)
- 963,481,600
- Cube (n³)
- 29,906,468,864,000
- Divisor count
- 28
- σ(n) — sum of divisors
- 74,676
- φ(n) — Euler's totient
- 12,288
- Sum of prime factors
- 114
Primality
Prime factorization: 2 6 × 5 × 97
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- thirty-one thousand forty
- Ordinal
- 31040th
- Binary
- 111100101000000
- Octal
- 74500
- Hexadecimal
- 0x7940
- Base64
- eUA=
- One's complement
- 34,495 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓆼𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵λαμʹ
- Mayan (base 20)
- 𝋣·𝋱·𝋬·𝋠
- Chinese
- 三萬一千零四十
- Chinese (financial)
- 參萬壹仟零肆拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 31,040 = 7
- e — Euler's number (e)
- Digit 31,040 = 8
- φ — Golden ratio (φ)
- Digit 31,040 = 9
- √2 — Pythagoras's (√2)
- Digit 31,040 = 9
- ln 2 — Natural log of 2
- Digit 31,040 = 0
- γ — Euler-Mascheroni (γ)
- Digit 31,040 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 31040, here are decompositions:
- 7 + 31033 = 31040
- 103 + 30937 = 31040
- 109 + 30931 = 31040
- 181 + 30859 = 31040
- 199 + 30841 = 31040
- 211 + 30829 = 31040
- 223 + 30817 = 31040
- 277 + 30763 = 31040
Showing the first eight; more decompositions exist.
UTF-8 encoding: E7 A5 80 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.121.64.
- Address
- 0.0.121.64
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.121.64
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 31040 first appears in π at position 90,716 of the decimal expansion (the 90,716ordinal-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.