31213401013102 has 64 divisors (see below), whose sum is σ = 61682101862400. Its totient is φ = 11485078656480.

The previous prime is 31213401013099. The next prime is 31213401013117. The reversal of 31213401013102 is 20131010431213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55494652 + ... + 56054287.

It is an arithmetic number, because the mean of its divisors is an integer number (963782841600).

Almost surely, 2^{31213401013102} is an apocalyptic number.

31213401013102 is a deficient number, since it is larger than the sum of its proper divisors (30468700849298).

31213401013102 is a wasteful number, since it uses less digits than its factorization.

31213401013102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111549061.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31213401013102 its reverse (20131010431213), we get a palindrome (51344411444315).

The spelling of 31213401013102 in words is "thirty-one trillion, two hundred thirteen billion, four hundred one million, thirteen thousand, one hundred two".