331393884 has 24 divisors (see below), whose sum is σ = 774816000. Its totient is φ = 110241264.

The previous prime is 331393871. The next prime is 331393889. The reversal of 331393884 is 488393133.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331393889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21684 + ... + 33659.

It is an arithmetic number, because the mean of its divisors is an integer number (32284000).

Almost surely, 2^331393884 is an apocalyptic number.

It is an amenable number.

331393884 is an abundant number, since it is smaller than the sum of its proper divisors (443422116).

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

331393884 is a wasteful number, since it uses less digits than its factorization.

331393884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55849 (or 55847 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 331393884 is about 18204.2270915301. The cubic root of 331393884 is about 692.0139187729.

The spelling of 331393884 in words is "three hundred thirty-one million, three hundred ninety-three thousand, eight hundred eighty-four".