31313111108 has 18 divisors (see below), whose sum is σ = 56752692906. Its totient is φ = 15116672704.

The previous prime is 31313111069. The next prime is 31313111111. The reversal of 31313111108 is 80111131313.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2687178244 + 28625932864 = 51838^2 + 169192^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4650785 + ... + 4657512.

Almost surely, 2^31313111108 is an apocalyptic number.

It is an amenable number.

31313111108 is a deficient number, since it is larger than the sum of its proper divisors (25439581798).

31313111108 is a wasteful number, since it uses less digits than its factorization.

31313111108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9308359 (or 9308328 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 31313111108 in words is "thirty-one billion, three hundred thirteen million, one hundred eleven thousand, one hundred eight".