331538032 has 20 divisors (see below), whose sum is σ = 734120176. Its totient is φ = 142087680.

The previous prime is 331537993. The next prime is 331538033. The reversal of 331538032 is 230835133.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331538033) 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, 1479969 + ... + 1480192.

Almost surely, 2^331538032 is an apocalyptic number.

It is an amenable number.

331538032 is an abundant number, since it is smaller than the sum of its proper divisors (402582144).

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

331538032 is a wasteful number, since it uses less digits than its factorization.

331538032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960176 (or 2960170 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 331538032 is about 18208.1858514241. The cubic root of 331538032 is about 692.1142404419.

The spelling of 331538032 in words is "three hundred thirty-one million, five hundred thirty-eight thousand, thirty-two".