31,480
31,480 is a composite number, even.
31,480 (thirty-one thousand four hundred eighty) is an even 5-digit number. It is a composite number with 16 divisors, and factors as 2³ × 5 × 787. Its proper divisors sum to 39,440, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x7AF8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 8,413
- Recamán's sequence
- a(311,424) = 31,480
- Square (n²)
- 990,990,400
- Cube (n³)
- 31,196,377,792,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 70,920
- φ(n) — Euler's totient
- 12,576
- Sum of prime factors
- 798
Primality
Prime factorization: 2 3 × 5 × 787
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√31,480 = [177; (2, 2, 1, 7, 2, 1, 5, 1, 3, 2, 1, 2, 17, 2, 1, 2, 3, 1, 5, 1, 2, 7, 1, 2, …)]
Period length 26 — the block in parentheses repeats forever.
Representations
- In words
- thirty-one thousand four hundred eighty
- Ordinal
- 31480th
- Binary
- 111101011111000
- Octal
- 75370
- Hexadecimal
- 0x7AF8
- Base64
- evg=
- One's complement
- 34,055 (16-bit)
- Scientific notation
- 3.148 × 10⁴
- As a duration
- 31,480 s = 8 hours, 44 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵λαυπʹ
- Mayan (base 20)
- 𝋣·𝋲·𝋮·𝋠
- Chinese
- 三萬一千四百八十
- Chinese (financial)
- 參萬壹仟肆佰捌拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 31,480 = 6
- e — Euler's number (e)
- Digit 31,480 = 2
- φ — Golden ratio (φ)
- Digit 31,480 = 9
- √2 — Pythagoras's (√2)
- Digit 31,480 = 2
- ln 2 — Natural log of 2
- Digit 31,480 = 3
- γ — Euler-Mascheroni (γ)
- Digit 31,480 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 31480, here are decompositions:
- 3 + 31477 = 31480
- 11 + 31469 = 31480
- 83 + 31397 = 31480
- 89 + 31391 = 31480
- 101 + 31379 = 31480
- 173 + 31307 = 31480
- 227 + 31253 = 31480
- 233 + 31247 = 31480
Showing the first eight; more decompositions exist.
UTF-8 encoding: E7 AB B8 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.122.248.
- Address
- 0.0.122.248
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.122.248
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 31480 first appears in π at position 109,579 of the decimal expansion (the 109,579ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.