331609698 has 48 divisors (see below), whose sum is σ = 864352320. Its totient is φ = 89758368.

The previous prime is 331609661. The next prime is 331609703. The reversal of 331609698 is 896906133.

331609698 is a `hidden beast` number, since 3 + 31 + 609 + 6 + 9 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66865 + ... + 71652.

It is an arithmetic number, because the mean of its divisors is an integer number (18007340).

Almost surely, 2^331609698 is an apocalyptic number.

331609698 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

331609698 is an abundant number, since it is smaller than the sum of its proper divisors (532742622).

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

331609698 is a wasteful number, since it uses less digits than its factorization.

331609698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138551 (or 138548 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 331609698 is about 18210.1537061058. The cubic root of 331609698 is about 692.1641065013.

The spelling of 331609698 in words is "three hundred thirty-one million, six hundred nine thousand, six hundred ninety-eight".