31113321113 has 16 divisors (see below), whose sum is σ = 36417753600. Its totient is φ = 26570073600.

The previous prime is 31113321061. The next prime is 31113321149. The reversal of 31113321113 is 31112331113.

It is not a de Polignac number, because 31113321113 - 2¹⁰ = 31113320089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31113324113) 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, 74408 + ... + 260313.

It is an arithmetic number, because the mean of its divisors is an integer number (2276109600).

Almost surely, 2^31113321113 is an apocalyptic number.

It is an amenable number.

31113321113 is a deficient number, since it is larger than the sum of its proper divisors (5304432487).

31113321113 is an equidigital number, since it uses as much as digits as its factorization.

31113321113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335013 (or 334999 counting only the distinct ones).

The product of its digits is 162, while the sum is 20.

Adding to 31113321113 its reverse (31112331113), we get a palindrome (62225652226).

The spelling of 31113321113 in words is "thirty-one billion, one hundred thirteen million, three hundred twenty-one thousand, one hundred thirteen".