331347564 has 48 divisors (see below), whose sum is σ = 863600640. Its totient is φ = 109864080.

The previous prime is 331347563. The next prime is 331347607. The reversal of 331347564 is 465743133.

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

It is not an unprimeable number, because it can be changed into a prime (331347563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12597 + ... + 28659.

It is an arithmetic number, because the mean of its divisors is an integer number (17991680).

Almost surely, 2^331347564 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 331347564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431800320).

331347564 is an abundant number, since it is smaller than the sum of its proper divisors (532253076).

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

331347564 is a wasteful number, since it uses less digits than its factorization.

331347564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16267 (or 16259 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 331347564 is about 18202.9548150843. The cubic root of 331347564 is about 691.9816755926.

The spelling of 331347564 in words is "three hundred thirty-one million, three hundred forty-seven thousand, five hundred sixty-four".