133553031 has 16 divisors (see below), whose sum is σ = 183049440. Its totient is φ = 86561280.

The previous prime is 133553027. The next prime is 133553081. The reversal of 133553031 is 130355331.

It is not a de Polignac number, because 133553031 - 2² = 133553027 is a prime.

It is a super-2 number, since 2×133553031² = 35672824178573922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133552992 and 133553010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133553011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36765 + ... + 40233.

It is an arithmetic number, because the mean of its divisors is an integer number (11440590).

Almost surely, 2^133553031 is an apocalyptic number.

133553031 is a deficient number, since it is larger than the sum of its proper divisors (49496409).

133553031 is a wasteful number, since it uses less digits than its factorization.

133553031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3826.

The product of its (nonzero) digits is 2025, while the sum is 24.

The square root of 133553031 is about 11556.5146562448. The cubic root of 133553031 is about 511.1533949457.

The spelling of 133553031 in words is "one hundred thirty-three million, five hundred fifty-three thousand, thirty-one".