31313330113 has 12 divisors (see below), whose sum is σ = 35001124608. Its totient is φ = 27972200880.

The previous prime is 31313330063. The next prime is 31313330117. The reversal of 31313330113 is 31103331313.

It is a de Polignac number, because none of the positive numbers 2^k-31313330113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31313330117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2983245 + ... + 2993722.

It is an arithmetic number, because the mean of its divisors is an integer number (2916760384).

Almost surely, 2^31313330113 is an apocalyptic number.

It is an amenable number.

31313330113 is a deficient number, since it is larger than the sum of its proper divisors (3687794495).

31313330113 is a wasteful number, since it uses less digits than its factorization.

31313330113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5977024 (or 5977011 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 22.

Adding to 31313330113 its reverse (31103331313), we get a palindrome (62416661426).

The spelling of 31313330113 in words is "thirty-one billion, three hundred thirteen million, three hundred thirty thousand, one hundred thirteen".