31023312313012 has 6 divisors (see below), whose sum is σ = 54290796547778. Its totient is φ = 15511656156504.

The previous prime is 31023312312983. The next prime is 31023312313099. The reversal of 31023312313012 is 21031321332013.

It can be written as a sum of positive squares in only one way, i.e., 18321173544976 + 12702138768036 = 4280324^2 + 3564006^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3877914039123 + ... + 3877914039130.

Almost surely, 2^{31023312313012} is an apocalyptic number.

It is an amenable number.

31023312313012 is a deficient number, since it is larger than the sum of its proper divisors (23267484234766).

31023312313012 is a wasteful number, since it uses less digits than its factorization.

31023312313012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7755828078257 (or 7755828078255 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31023312313012 its reverse (21031321332013), we get a palindrome (52054633645025).

The spelling of 31023312313012 in words is "thirty-one trillion, twenty-three billion, three hundred twelve million, three hundred thirteen thousand, twelve".