331349780 has 12 divisors (see below), whose sum is σ = 695834580. Its totient is φ = 132539904.

The previous prime is 331349761. The next prime is 331349807. The reversal of 331349780 is 87943133.

331349780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 251032336 + 80317444 = 15844^2 + 8962^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8283725 + ... + 8283764.

It is an arithmetic number, because the mean of its divisors is an integer number (57986215).

Almost surely, 2^331349780 is an apocalyptic number.

It is an amenable number.

331349780 is an abundant number, since it is smaller than the sum of its proper divisors (364484800).

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

331349780 is a wasteful number, since it uses less digits than its factorization.

331349780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16567498 (or 16567496 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 331349780 is about 18203.0156842211. The cubic root of 331349780 is about 691.9832182104.

The spelling of 331349780 in words is "three hundred thirty-one million, three hundred forty-nine thousand, seven hundred eighty".