331345872 has 120 divisors (see below), whose sum is σ = 1089492768. Its totient is φ = 92678400.

The previous prime is 331345867. The next prime is 331345891. The reversal of 331345872 is 278543133.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 12547 + ... + 28637.

Almost surely, 2^331345872 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 331345872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (544746384).

331345872 is an abundant number, since it is smaller than the sum of its proper divisors (758146896).

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

331345872 is a wasteful number, since it uses less digits than its factorization.

331345872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16129 (or 16120 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 331345872 is about 18202.9083390540. The cubic root of 331345872 is about 691.9804977408.

The spelling of 331345872 in words is "three hundred thirty-one million, three hundred forty-five thousand, eight hundred seventy-two".