31102313321012 has 24 divisors (see below), whose sum is σ = 54596493020160. Its totient is φ = 15503388415200.

The previous prime is 31102313320963. The next prime is 31102313321063. The reversal of 31102313321012 is 21012331320113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7434812 + ... + 10838867.

It is an arithmetic number, because the mean of its divisors is an integer number (2274853875840).

Almost surely, 2^{31102313321012} is an apocalyptic number.

It is an amenable number.

31102313321012 is a deficient number, since it is larger than the sum of its proper divisors (23494179699148).

31102313321012 is a wasteful number, since it uses less digits than its factorization.

31102313321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18274991 (or 18274989 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31102313321012 its reverse (21012331320113), we get a palindrome (52114644641125).

The spelling of 31102313321012 in words is "thirty-one trillion, one hundred two billion, three hundred thirteen million, three hundred twenty-one thousand, twelve".