31321132312102 has 32 divisors (see below), whose sum is σ = 48972454594560. Its totient is φ = 15007133554560.

The previous prime is 31321132312087. The next prime is 31321132312159. The reversal of 31321132312102 is 20121323112313.

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 15 ways as a sum of consecutive naturals, for example, 5344549 + ... + 9550207.

It is an arithmetic number, because the mean of its divisors is an integer number (1530389206080).

Almost surely, 2^{31321132312102} is an apocalyptic number.

31321132312102 is a deficient number, since it is larger than the sum of its proper divisors (17651322282458).

31321132312102 is a wasteful number, since it uses less digits than its factorization.

31321132312102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4206868.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31321132312102 its reverse (20121323112313), we get a palindrome (51442455424415).

The spelling of 31321132312102 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred thirty-two million, three hundred twelve thousand, one hundred two".