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133031 = 151881
BaseRepresentation
bin100000011110100111
320202111002
4200132213
513224111
62503515
71062563
oct403647
9222432
10133031
1190a48
1264b9b
1348722
14366a3
152963b
hex207a7

133031 has 4 divisors (see below), whose sum is σ = 134064. Its totient is φ = 132000.

The previous prime is 133013. The next prime is 133033. The reversal of 133031 is 130331.

133031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 133031 - 26 = 132967 is a prime.

It is a super-2 number, since 2×1330312 = 35394493922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290 + ... + 591.

It is an arithmetic number, because the mean of its divisors is an integer number (33516).

2133031 is an apocalyptic number.

133031 is a deficient number, since it is larger than the sum of its proper divisors (1033).

133031 is an equidigital number, since it uses as much as digits as its factorization.

133031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032.

The product of its (nonzero) digits is 27, while the sum is 11.

The square root of 133031 is about 364.7341497584. The cubic root of 133031 is about 51.0486527899.

Adding to 133031 its reverse (130331), we get a palindrome (263362).

The spelling of 133031 in words is "one hundred thirty-three thousand, thirty-one".

Divisors: 1 151 881 133031