331488738 has 24 divisors (see below), whose sum is σ = 820829568. Its totient is φ = 94711032.

The previous prime is 331488709. The next prime is 331488743. The reversal of 331488738 is 837884133.

It is a junction number, because it is equal to n+sod(n) for n = 331488693 and 331488702.

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, 1315306 + ... + 1315557.

It is an arithmetic number, because the mean of its divisors is an integer number (34201232).

Almost surely, 2^331488738 is an apocalyptic number.

331488738 is an abundant number, since it is smaller than the sum of its proper divisors (489340830).

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

331488738 is a wasteful number, since it uses less digits than its factorization.

331488738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630878 (or 2630875 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 331488738 is about 18206.8321791574. The cubic root of 331488738 is about 692.0799369160.

The spelling of 331488738 in words is "three hundred thirty-one million, four hundred eighty-eight thousand, seven hundred thirty-eight".