331899372 has 144 divisors (see below), whose sum is σ = 1020597760. Its totient is φ = 88833024.

The previous prime is 331899343. The next prime is 331899397. The reversal of 331899372 is 273998133.

It is a super-2 number, since 2×331899372² = 220314386267988768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 492828 + ... + 493500.

Almost surely, 2^331899372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331899372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510298880).

331899372 is an abundant number, since it is smaller than the sum of its proper divisors (688698388).

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

331899372 is a wasteful number, since it uses less digits than its factorization.

331899372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 807 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 331899372 is about 18218.1056095303. The cubic root of 331899372 is about 692.3655919553.

The spelling of 331899372 in words is "three hundred thirty-one million, eight hundred ninety-nine thousand, three hundred seventy-two".