133,981
133,981 is a prime, odd.
133,981 (one hundred thirty-three thousand nine hundred eighty-one) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x20B5D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 25
- Digit product
- 648
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 189,331
- Square (n²)
- 17,950,908,361
- Cube (n³)
- 2,405,080,653,115,141
- Divisor count
- 2
- σ(n) — sum of divisors
- 133,982
- φ(n) — Euler's totient
- 133,980
Primality
133,981 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√133,981 = [366; (29, 3, 1, 1, 4, 8, 5, 9, 3, 4, 1, 9, 1, 3, 1, 15, 1, 5, 3, 6, 3, 1, 1, 2, …)]
Representations
- In words
- one hundred thirty-three thousand nine hundred eighty-one
- Ordinal
- 133981st
- Binary
- 100000101101011101
- Octal
- 405535
- Hexadecimal
- 0x20B5D
- Base64
- Agtd
- One's complement
- 4,294,833,314 (32-bit)
- Scientific notation
- 1.33981 × 10⁵
- As a duration
- 133,981 s = 1 day, 13 hours, 13 minutes, 1 second
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹 𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλγϡπαʹ
- Mayan (base 20)
- 𝋰·𝋮·𝋳·𝋡
- Chinese
- 一十三萬三千九百八十一
- Chinese (financial)
- 壹拾參萬參仟玖佰捌拾壹
Also seen as
UTF-8 encoding: F0 A0 AD 9D (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.11.93.
- Address
- 0.2.11.93
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.11.93
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 133,981 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
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.