331313052 has 96 divisors (see below), whose sum is σ = 919134720. Its totient is φ = 90881280.

The previous prime is 331313039. The next prime is 331313071. The reversal of 331313052 is 250313133.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 674527 + ... + 675017.

It is an arithmetic number, because the mean of its divisors is an integer number (9574320).

Almost surely, 2^331313052 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 331313052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459567360).

331313052 is an abundant number, since it is smaller than the sum of its proper divisors (587821668).

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

331313052 is a wasteful number, since it uses less digits than its factorization.

331313052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 331313052 is about 18202.0068124369. The cubic root of 331313052 is about 691.9576499637.

Adding to 331313052 its reverse (250313133), we get a palindrome (581626185).

The spelling of 331313052 in words is "three hundred thirty-one million, three hundred thirteen thousand, fifty-two".