131,405
131,405 is a composite number, odd.
131,405 (one hundred thirty-one thousand four hundred five) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 5 × 41 × 641. Written other ways, in hexadecimal, 0x2014D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 504,131
- Recamán's sequence
- a(229,562) = 131,405
- Square (n²)
- 17,267,274,025
- Cube (n³)
- 2,269,006,143,255,125
- Divisor count
- 8
- σ(n) — sum of divisors
- 161,784
- φ(n) — Euler's totient
- 102,400
- Sum of prime factors
- 687
Primality
Prime factorization: 5 × 41 × 641
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,405 = [362; (2, 144, 2, 724)]
Period length 4 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand four hundred five
- Ordinal
- 131405th
- Binary
- 100000000101001101
- Octal
- 400515
- Hexadecimal
- 0x2014D
- Base64
- AgFN
- One's complement
- 4,294,835,890 (32-bit)
- Scientific notation
- 1.31405 × 10⁵
- As a duration
- 131,405 s = 1 day, 12 hours, 30 minutes, 5 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλαυεʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋪·𝋥
- Chinese
- 一十三萬一千四百零五
- Chinese (financial)
- 壹拾參萬壹仟肆佰零伍
Also seen as
UTF-8 encoding: F0 A0 85 8D (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.77.
- Address
- 0.2.1.77
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.77
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 131,405 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 131405 first appears in π at position 410,366 of the decimal expansion (the 410,366ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.