131,904
131,904 is a composite number, even.
131,904 (one hundred thirty-one thousand nine hundred four) is an even 6-digit number. It is a composite number with 42 divisors, and factors as 2⁶ × 3² × 229. Its proper divisors sum to 247,826, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x20340.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 18
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 409,131
- Recamán's sequence
- a(228,564) = 131,904
- Square (n²)
- 17,398,665,216
- Cube (n³)
- 2,294,953,536,651,264
- Divisor count
- 42
- σ(n) — sum of divisors
- 379,730
- φ(n) — Euler's totient
- 43,776
- Sum of prime factors
- 247
Primality
Prime factorization: 2 6 × 3 2 × 229
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,904 = [363; (5, 2, 1, 1, 1, 3, 7, 2, 1, 2, 3, 181, 3, 2, 1, 2, 7, 3, 1, 1, 1, 2, 5, 726)]
Period length 24 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand nine hundred four
- Ordinal
- 131904th
- Binary
- 100000001101000000
- Octal
- 401500
- Hexadecimal
- 0x20340
- Base64
- AgNA
- One's complement
- 4,294,835,391 (32-bit)
- Scientific notation
- 1.31904 × 10⁵
- As a duration
- 131,904 s = 1 day, 12 hours, 38 minutes, 24 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλαϡδʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋯·𝋤
- Chinese
- 一十三萬一千九百零四
- Chinese (financial)
- 壹拾參萬壹仟玖佰零肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131904, here are decompositions:
- 5 + 131899 = 131904
- 11 + 131893 = 131904
- 13 + 131891 = 131904
- 43 + 131861 = 131904
- 67 + 131837 = 131904
- 107 + 131797 = 131904
- 127 + 131777 = 131904
- 173 + 131731 = 131904
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 8D 80 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.3.64.
- Address
- 0.2.3.64
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.3.64
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 131,904 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.