331402044 has 36 divisors (see below), whose sum is σ = 794774904. Its totient is φ = 107476416.

The previous prime is 331402021. The next prime is 331402051. The reversal of 331402044 is 440204133.

It is a self number, because there is not a number n which added to its sum of digits gives 331402044.

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, 6342 + ... + 26514.

Almost surely, 2^331402044 is an apocalyptic number.

It is an amenable number.

331402044 is an abundant number, since it is smaller than the sum of its proper divisors (463372860).

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

331402044 is a wasteful number, since it uses less digits than its factorization.

331402044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20254 (or 20215 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 331402044 is about 18204.4512139202. The cubic root of 331402044 is about 692.0195986074.

Adding to 331402044 its reverse (440204133), we get a palindrome (771606177).

The spelling of 331402044 in words is "three hundred thirty-one million, four hundred two thousand, forty-four".