331538364 has 36 divisors (see below), whose sum is σ = 840761376. Its totient is φ = 110155968.

The previous prime is 331538351. The next prime is 331538377. The reversal of 331538364 is 463835133.

It is an interprime number because it is at equal distance from previous prime (331538351) and next prime (331538377).

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 3444 + ... + 25979.

Almost surely, 2^331538364 is an apocalyptic number.

It is an amenable number.

331538364 is an abundant number, since it is smaller than the sum of its proper divisors (509223012).

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

331538364 is a wasteful number, since it uses less digits than its factorization.

331538364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29746 (or 29741 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 331538364 is about 18208.1949682004. The cubic root of 331538364 is about 692.1144714680.

The spelling of 331538364 in words is "three hundred thirty-one million, five hundred thirty-eight thousand, three hundred sixty-four".