331931604 has 24 divisors (see below), whose sum is σ = 778444128. Its totient is φ = 110081440.

The previous prime is 331931597. The next prime is 331931609. The reversal of 331931604 is 406139133.

331931604 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×331931604² = 220357179468025632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331931609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67842 + ... + 72569.

It is an arithmetic number, because the mean of its divisors is an integer number (32435172).

Almost surely, 2^331931604 is an apocalyptic number.

It is an amenable number.

331931604 is an abundant number, since it is smaller than the sum of its proper divisors (446512524).

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

331931604 is a wasteful number, since it uses less digits than its factorization.

331931604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140615 (or 140613 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 331931604 is about 18218.9902025332. The cubic root of 331931604 is about 692.3880039746.

The spelling of 331931604 in words is "three hundred thirty-one million, nine hundred thirty-one thousand, six hundred four".