331997064 has 32 divisors (see below), whose sum is σ = 948563520. Its totient is φ = 94856256.

The previous prime is 331997059. The next prime is 331997117. The reversal of 331997064 is 460799133.

It is a super-2 number, since 2×331997064² = 220444101009240192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 987919 + ... + 988254.

It is an arithmetic number, because the mean of its divisors is an integer number (29642610).

Almost surely, 2^331997064 is an apocalyptic number.

It is an amenable number.

331997064 is an abundant number, since it is smaller than the sum of its proper divisors (616566456).

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

331997064 is a wasteful number, since it uses less digits than its factorization.

331997064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976189 (or 1976185 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 331997064 is about 18220.7865911436. The cubic root of 331997064 is about 692.4335161013.

The spelling of 331997064 in words is "three hundred thirty-one million, nine hundred ninety-seven thousand, sixty-four".