31113345021105 has 96 divisors (see below), whose sum is σ = 54358836428160. Its totient is φ = 15176161244160.

The previous prime is 31113345021053. The next prime is 31113345021151. The reversal of 31113345021105 is 50112054331113.

It is not a de Polignac number, because 31113345021105 - 2²¹ = 31113342923953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1895875350 + ... + 1895891760.

It is an arithmetic number, because the mean of its divisors is an integer number (566237879460).

Almost surely, 2^{31113345021105} is an apocalyptic number.

It is an amenable number.

31113345021105 is a deficient number, since it is larger than the sum of its proper divisors (23245491407055).

31113345021105 is a wasteful number, since it uses less digits than its factorization.

31113345021105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28559 (or 28540 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 31113345021105 its reverse (50112054331113), we get a palindrome (81225399352218).

The spelling of 31113345021105 in words is "thirty-one trillion, one hundred thirteen billion, three hundred forty-five million, twenty-one thousand, one hundred five".