331560012 has 24 divisors (see below), whose sum is σ = 884160256. Its totient is φ = 94731408.

The previous prime is 331560011. The next prime is 331560023. The reversal of 331560012 is 210065133.

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

It is not an unprimeable number, because it can be changed into a prime (331560011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1973488 + ... + 1973655.

Almost surely, 2^331560012 is an apocalyptic number.

It is an amenable number.

331560012 is an abundant number, since it is smaller than the sum of its proper divisors (552600244).

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

331560012 is a wasteful number, since it uses less digits than its factorization.

331560012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3947157 (or 3947155 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 331560012 is about 18208.7894161034. The cubic root of 331560012 is about 692.1295351526.

The spelling of 331560012 in words is "three hundred thirty-one million, five hundred sixty thousand, twelve".