31164080 has 40 divisors (see below), whose sum is σ = 75611232. Its totient is φ = 11922944.

The previous prime is 31164073. The next prime is 31164097. The reversal of 31164080 is 8046113.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6629 + ... + 10308.

Almost surely, 2^31164080 is an apocalyptic number.

It is an amenable number.

31164080 is an abundant number, since it is smaller than the sum of its proper divisors (44447152).

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

31164080 is a wasteful number, since it uses less digits than its factorization.

31164080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16973 (or 16967 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 31164080 is about 5582.4797357447. The cubic root of 31164080 is about 314.6913243948.

The spelling of 31164080 in words is "thirty-one million, one hundred sixty-four thousand, eighty".