31320112102 has 16 divisors (see below), whose sum is σ = 47649492000. Its totient is φ = 15438392640.

The previous prime is 31320112099. The next prime is 31320112139. The reversal of 31320112102 is 20121102313.

It is a congruent 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, 317599 + ... + 404362.

It is an arithmetic number, because the mean of its divisors is an integer number (2978093250).

Almost surely, 2^31320112102 is an apocalyptic number.

31320112102 is a deficient number, since it is larger than the sum of its proper divisors (16329379898).

31320112102 is a wasteful number, since it uses less digits than its factorization.

31320112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722271.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31320112102 its reverse (20121102313), we get a palindrome (51441214415).

The spelling of 31320112102 in words is "thirty-one billion, three hundred twenty million, one hundred twelve thousand, one hundred two".