31031023113 has 12 divisors (see below), whose sum is σ = 44866589040. Its totient is φ = 20667041016.

The previous prime is 31031023097. The next prime is 31031023141. The reversal of 31031023113 is 31132013013.

It is a happy number.

31031023113 is a `hidden beast` number, since 310 + 310 + 2 + 31 + 13 = 666.

It is not a de Polignac number, because 31031023113 - 2⁴ = 31031023097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31031023213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1682631 + ... + 1700972.

It is an arithmetic number, because the mean of its divisors is an integer number (3738882420).

Almost surely, 2^31031023113 is an apocalyptic number.

It is an amenable number.

31031023113 is a deficient number, since it is larger than the sum of its proper divisors (13835565927).

31031023113 is a wasteful number, since it uses less digits than its factorization.

31031023113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384628 (or 3384625 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31031023113 its reverse (31132013013), we get a palindrome (62163036126).

The spelling of 31031023113 in words is "thirty-one billion, thirty-one million, twenty-three thousand, one hundred thirteen".