31311012110012 has 24 divisors (see below), whose sum is σ = 55694934306480. Its totient is φ = 15398195823360.

The previous prime is 31311012109967. The next prime is 31311012110033. The reversal of 31311012110012 is 21001121011313.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2945588 + ... + 8443844.

It is an arithmetic number, because the mean of its divisors is an integer number (2320622262770).

Almost surely, 2^{31311012110012} is an apocalyptic number.

It is an amenable number.

31311012110012 is a deficient number, since it is larger than the sum of its proper divisors (24383922196468).

31311012110012 is a wasteful number, since it uses less digits than its factorization.

31311012110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5521661 (or 5521659 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 31311012110012 its reverse (21001121011313), we get a palindrome (52312133121325).

The spelling of 31311012110012 in words is "thirty-one trillion, three hundred eleven billion, twelve million, one hundred ten thousand, twelve".