133031172 has 24 divisors (see below), whose sum is σ = 323902656. Its totient is φ = 42415648.

The previous prime is 133031159. The next prime is 133031191. The reversal of 133031172 is 271130331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240723 + ... + 241274.

It is an arithmetic number, because the mean of its divisors is an integer number (13495944).

Almost surely, 2^133031172 is an apocalyptic number.

133031172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133031172 is an abundant number, since it is smaller than the sum of its proper divisors (190871484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133031172 is a wasteful number, since it uses less digits than its factorization.

133031172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482027 (or 482025 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 133031172 is about 11533.9139930901. The cubic root of 133031172 is about 510.4867479068.

The spelling of 133031172 in words is "one hundred thirty-three million, thirty-one thousand, one hundred seventy-two".