131,999
131,999 is a composite number, odd.
131,999 (one hundred thirty-one thousand nine hundred ninety-nine) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 7 × 109 × 173. Written other ways, in hexadecimal, 0x2039F.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 32
- Digit product
- 2,187
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 999,131
- Recamán's sequence
- a(228,374) = 131,999
- Square (n²)
- 17,423,736,001
- Cube (n³)
- 2,299,915,728,395,999
- Divisor count
- 8
- σ(n) — sum of divisors
- 153,120
- φ(n) — Euler's totient
- 111,456
- Sum of prime factors
- 289
Primality
Prime factorization: 7 × 109 × 173
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,999 = [363; (3, 6, 3, 726)]
Period length 4 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand nine hundred ninety-nine
- Ordinal
- 131999th
- Binary
- 100000001110011111
- Octal
- 401637
- Hexadecimal
- 0x2039F
- Base64
- AgOf
- One's complement
- 4,294,835,296 (32-bit)
- Scientific notation
- 1.31999 × 10⁵
- As a duration
- 131,999 s = 1 day, 12 hours, 39 minutes, 59 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλαϡϟθʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋳·𝋳
- Chinese
- 一十三萬一千九百九十九
- Chinese (financial)
- 壹拾參萬壹仟玖佰玖拾玖
Also seen as
UTF-8 encoding: F0 A0 8E 9F (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.3.159.
- Address
- 0.2.3.159
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.3.159
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 131,999 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 131999 first appears in π at position 611,241 of the decimal expansion (the 611,241ordinal-suffix:st 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.