| ||||
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Cardinal | one hundred thirty-three | |||
Ordinal | 133rd (one hundred thirty-third) | |||
Factorization | 7 × 19 | |||
Divisors | 1, 7, 19, 133 | |||
Greek numeral | ΡΛΓ´ | |||
Roman numeral | CXXXIII | |||
Binary | 100001012 | |||
Ternary | 112213 | |||
Senary | 3416 | |||
Octal | 2058 | |||
Duodecimal | B112 | |||
Hexadecimal | 8516 |
133 (one hundred [and] thirty-three) is the natural number following 132 and preceding 134.
133 is an n whose divisors (excluding n itself) added up divide φ(n). It is an octagonal number [1] and a happy number. [2]
133 is a Harshad number, because it is divisible by the sum of its digits.
133 is a repdigit in base 11 (111) and base 18 (77), whilst in base 20 it is a cyclic number formed from the reciprocal of the number three.
133 is a semiprime: a product of two prime numbers, namely 7 and 19. Since those prime factors are Gaussian primes, this means that 133 is a Blum integer.
133 is the number of compositions of 13 into distinct parts. [3]
133 is also: