131,021
131,021 is a composite number, odd.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 8
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 120,131
- Square (n²)
- 17,166,502,441
- Cube (n³)
- 2,249,172,316,322,261
- Divisor count
- 8
- σ(n) — sum of divisors
- 146,784
- φ(n) — Euler's totient
- 115,920
- Sum of prime factors
- 331
Primality
Prime factorization: 11 × 43 × 277
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,021 = [361; (1, 30, 2, 10, 3, 5, 8, 3, 25, 1, 1, 6, 1, 2, 1, 2, 3, 15, 9, 2, 5, 1, 3, 3, …)]
Period length 50 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand twenty-one
- Ordinal
- 131021st
- Binary
- 11111111111001101
- Octal
- 377715
- Hexadecimal
- 0x1FFCD
- Base64
- Af/N
- One's complement
- 4,294,836,274 (32-bit)
- Scientific notation
- 1.31021 × 10⁵
- As a duration
- 131,021 s = 1 day, 12 hours, 23 minutes, 41 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλακαʹ
- Mayan (base 20)
- 𝋰·𝋧·𝋫·𝋡
- Chinese
- 一十三萬一千零二十一
- Chinese (financial)
- 壹拾參萬壹仟零貳拾壹
Also seen as
As an unsigned 32-bit integer, this is the IPv4 address 0.1.255.205.
- Address
- 0.1.255.205
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.255.205
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 131,021 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 131021 first appears in π at position 39,294 of the decimal expansion (the 39,294ordinal-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.