331693808 has 20 divisors (see below), whose sum is σ = 644203560. Its totient is φ = 165447744.

The previous prime is 331693801. The next prime is 331693819. The reversal of 331693808 is 808396133.

It is a super-2 number, since 2×331693808² = 220041564531081728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331693801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18035 + ... + 31442.

It is an arithmetic number, because the mean of its divisors is an integer number (32210178).

Almost surely, 2^331693808 is an apocalyptic number.

It is an amenable number.

331693808 is a deficient number, since it is larger than the sum of its proper divisors (312509752).

331693808 is a wasteful number, since it uses less digits than its factorization.

331693808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49904 (or 49898 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 331693808 is about 18212.4629855492. The cubic root of 331693808 is about 692.2226220814. Note that the first 3 decimals are identical.

The spelling of 331693808 in words is "three hundred thirty-one million, six hundred ninety-three thousand, eight hundred eight".