331665164 has 24 divisors (see below), whose sum is σ = 585446400. Its totient is φ = 164401920.

The previous prime is 331665161. The next prime is 331665181. The reversal of 331665164 is 461566133.

It is a super-2 number, since 2×331665164² = 220003562022293792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331665161) 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, 258677 + ... + 259955.

It is an arithmetic number, because the mean of its divisors is an integer number (24393600).

Almost surely, 2^331665164 is an apocalyptic number.

It is an amenable number.

331665164 is a deficient number, since it is larger than the sum of its proper divisors (253781236).

331665164 is a wasteful number, since it uses less digits than its factorization.

331665164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793 (or 1791 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 331665164 is about 18211.6765839941. The cubic root of 331665164 is about 692.2026954753.

The spelling of 331665164 in words is "three hundred thirty-one million, six hundred sixty-five thousand, one hundred sixty-four".