31100113213113 has 16 divisors (see below), whose sum is σ = 47390860388736. Its totient is φ = 17771413883520.

The previous prime is 31100113213069. The next prime is 31100113213123. The reversal of 31100113213113 is 31131231100113.

It is not a de Polignac number, because 31100113213113 - 2¹⁰ = 31100113212089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 31100113213113.

It is not an unprimeable number, because it can be changed into a prime (31100113213123) by changing a digit.

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, 1680733 + ... + 8063813.

It is an arithmetic number, because the mean of its divisors is an integer number (2961928774296).

Almost surely, 2^{31100113213113} is an apocalyptic number.

It is an amenable number.

31100113213113 is a deficient number, since it is larger than the sum of its proper divisors (16290747175623).

31100113213113 is a wasteful number, since it uses less digits than its factorization.

31100113213113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6615104.

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 31100113213113 its reverse (31131231100113), we get a palindrome (62231344313226).

The spelling of 31100113213113 in words is "thirty-one trillion, one hundred billion, one hundred thirteen million, two hundred thirteen thousand, one hundred thirteen".