331633690 has 16 divisors (see below), whose sum is σ = 607059360. Its totient is φ = 130404880.

The previous prime is 331633681. The next prime is 331633723. The reversal of 331633690 is 96336133.

It is a happy number.

It is a super-2 number, since 2×331633690² = 219961808686032200, which contains 22 as substring.

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, 280456 + ... + 281635.

It is an arithmetic number, because the mean of its divisors is an integer number (37941210).

Almost surely, 2^331633690 is an apocalyptic number.

331633690 is a deficient number, since it is larger than the sum of its proper divisors (275425670).

331633690 is a wasteful number, since it uses less digits than its factorization.

331633690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562157.

The product of its (nonzero) digits is 26244, while the sum is 34.

The square root of 331633690 is about 18210.8124475543. The cubic root of 331633690 is about 692.1807988165.

The spelling of 331633690 in words is "three hundred thirty-one million, six hundred thirty-three thousand, six hundred ninety".