31013213120012 has 24 divisors (see below), whose sum is σ = 54289609070256. Its totient is φ = 15501896644608.

The previous prime is 31013213119979. The next prime is 31013213120047. The reversal of 31013213120012 is 21002131231013.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462456788 + ... + 462523844.

It is an arithmetic number, because the mean of its divisors is an integer number (2262067044594).

Almost surely, 2^{31013213120012} is an apocalyptic number.

It is an amenable number.

31013213120012 is a deficient number, since it is larger than the sum of its proper divisors (23276395950244).

31013213120012 is a wasteful number, since it uses less digits than its factorization.

31013213120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100457 (or 100455 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31013213120012 its reverse (21002131231013), we get a palindrome (52015344351025).

The spelling of 31013213120012 in words is "thirty-one trillion, thirteen billion, two hundred thirteen million, one hundred twenty thousand, twelve".