131,550
131,550 is a composite number, even.
131,550 (one hundred thirty-one thousand five hundred fifty) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2 × 3 × 5² × 877. Its proper divisors sum to 195,066, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x201DE.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 55,131
- Recamán's sequence
- a(229,272) = 131,550
- Square (n²)
- 17,305,402,500
- Cube (n³)
- 2,276,525,698,875,000
- Divisor count
- 24
- σ(n) — sum of divisors
- 326,616
- φ(n) — Euler's totient
- 35,040
- Sum of prime factors
- 892
Primality
Prime factorization: 2 × 3 × 5 2 × 877
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,550 = [362; (1, 2, 3, 5, 3, 10, 1, 2, 10, 5, 1, 8, 1, 5, 10, 2, 1, 10, 3, 5, 3, 2, 1, 724)]
Period length 24 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand five hundred fifty
- Ordinal
- 131550th
- Binary
- 100000000111011110
- Octal
- 400736
- Hexadecimal
- 0x201DE
- Base64
- AgHe
- One's complement
- 4,294,835,745 (32-bit)
- Scientific notation
- 1.3155 × 10⁵
- As a duration
- 131,550 s = 1 day, 12 hours, 32 minutes, 30 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλαφνʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋱·𝋪
- Chinese
- 一十三萬一千五百五十
- Chinese (financial)
- 壹拾參萬壹仟伍佰伍拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131550, here are decompositions:
- 7 + 131543 = 131550
- 31 + 131519 = 131550
- 43 + 131507 = 131550
- 53 + 131497 = 131550
- 61 + 131489 = 131550
- 71 + 131479 = 131550
- 73 + 131477 = 131550
- 101 + 131449 = 131550
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 87 9E (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.222.
- Address
- 0.2.1.222
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.222
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 131,550 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 131550 first appears in π at position 131,313 of the decimal expansion (the 131,313ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.