131,456
131,456 is a composite number, even.
131,456 (one hundred thirty-one thousand four hundred fifty-six) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2⁷ × 13 × 79. Its proper divisors sum to 154,144, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x20180.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 360
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 654,131
- Recamán's sequence
- a(229,460) = 131,456
- Square (n²)
- 17,280,679,936
- Cube (n³)
- 2,271,649,061,666,816
- Divisor count
- 32
- σ(n) — sum of divisors
- 285,600
- φ(n) — Euler's totient
- 59,904
- Sum of prime factors
- 106
Primality
Prime factorization: 2 7 × 13 × 79
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,456 = [362; (1, 1, 3, 6, 1, 28, 7, 181, 7, 28, 1, 6, 3, 1, 1, 724)]
Period length 16 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand four hundred fifty-six
- Ordinal
- 131456th
- Binary
- 100000000110000000
- Octal
- 400600
- Hexadecimal
- 0x20180
- Base64
- AgGA
- One's complement
- 4,294,835,839 (32-bit)
- Scientific notation
- 1.31456 × 10⁵
- As a duration
- 131,456 s = 1 day, 12 hours, 30 minutes, 56 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλαυνϛʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋬·𝋰
- Chinese
- 一十三萬一千四百五十六
- Chinese (financial)
- 壹拾參萬壹仟肆佰伍拾陸
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131456, here are decompositions:
- 7 + 131449 = 131456
- 19 + 131437 = 131456
- 43 + 131413 = 131456
- 139 + 131317 = 131456
- 163 + 131293 = 131456
- 307 + 131149 = 131456
- 313 + 131143 = 131456
- 397 + 131059 = 131456
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 86 80 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.128.
- Address
- 0.2.1.128
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.128
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 131,456 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.