312331032012 has 24 divisors (see below), whose sum is σ = 728781480000. Its totient is φ = 104109048016.

The previous prime is 312331031963. The next prime is 312331032017. The reversal of 312331032012 is 210230133213.

It is a self number, because there is not a number n which added to its sum of digits gives 312331032012.

It is not an unprimeable number, because it can be changed into a prime (312331032017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1679239 + ... + 1855937.

It is an arithmetic number, because the mean of its divisors is an integer number (30365895000).

Almost surely, 2^312331032012 is an apocalyptic number.

It is an amenable number.

312331032012 is an abundant number, since it is smaller than the sum of its proper divisors (416450447988).

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

312331032012 is a wasteful number, since it uses less digits than its factorization.

312331032012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324005 (or 324003 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 312331032012 its reverse (210230133213), we get a palindrome (522561165225).

The spelling of 312331032012 in words is "three hundred twelve billion, three hundred thirty-one million, thirty-two thousand, twelve".