331312012 has 12 divisors (see below), whose sum is σ = 584362240. Its totient is φ = 164351376.

The previous prime is 331312001. The next prime is 331312019. The reversal of 331312012 is 210213133.

It is not an unprimeable number, because it can be changed into a prime (331312019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325587 + ... + 326602.

Almost surely, 2^331312012 is an apocalyptic number.

It is an amenable number.

331312012 is a deficient number, since it is larger than the sum of its proper divisors (253050228).

331312012 is a wasteful number, since it uses less digits than its factorization.

331312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652320 (or 652318 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 331312012 is about 18201.9782441360. The cubic root of 331312012 is about 691.9569259388.

Adding to 331312012 its reverse (210213133), we get a palindrome (541525145).

The spelling of 331312012 in words is "three hundred thirty-one million, three hundred twelve thousand, twelve".