331680344 has 16 divisors (see below), whose sum is σ = 623931000. Its totient is φ = 165298752.

The previous prime is 331680331. The next prime is 331680379. The reversal of 331680344 is 443086133.

331680344 = 78² + 79² + ... + 998².

It is a super-2 number, since 2×331680344² = 220023701191916672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 331680344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65069 + ... + 69980.

Almost surely, 2^331680344 is an apocalyptic number.

It is an amenable number.

331680344 is a deficient number, since it is larger than the sum of its proper divisors (292250656).

331680344 is a wasteful number, since it uses less digits than its factorization.

331680344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135362 (or 135358 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 331680344 is about 18212.0933448080. The cubic root of 331680344 is about 692.2132558012.

The spelling of 331680344 in words is "three hundred thirty-one million, six hundred eighty thousand, three hundred forty-four".