331560240 has 80 divisors (see below), whose sum is σ = 1121285376. Its totient is φ = 80377600.

The previous prime is 331560223. The next prime is 331560263. The reversal of 331560240 is 42065133.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 331560240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60156 + ... + 65435.

Almost surely, 2^331560240 is an apocalyptic number.

331560240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331560240 is an abundant number, since it is smaller than the sum of its proper divisors (789725136).

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

331560240 is a wasteful number, since it uses less digits than its factorization.

331560240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125618 (or 125612 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 331560240 is about 18208.7956768151. The cubic root of 331560240 is about 692.1296938021.

The spelling of 331560240 in words is "three hundred thirty-one million, five hundred sixty thousand, two hundred forty".