31310110111 has 24 divisors (see below), whose sum is σ = 38602897056. Its totient is φ = 25233384960.

The previous prime is 31310110109. The next prime is 31310110123. The reversal of 31310110111 is 11101101313.

It is not a de Polignac number, because 31310110111 - 2¹ = 31310110109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31310110091 and 31310110100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31310119111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 840595 + ... + 877051.

It is an arithmetic number, because the mean of its divisors is an integer number (1608454044).

Almost surely, 2^31310110111 is an apocalyptic number.

31310110111 is a deficient number, since it is larger than the sum of its proper divisors (7292786945).

31310110111 is a wasteful number, since it uses less digits than its factorization.

31310110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37519 (or 37512 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 13.

Adding to 31310110111 its reverse (11101101313), we get a palindrome (42411211424).

The spelling of 31310110111 in words is "thirty-one billion, three hundred ten million, one hundred ten thousand, one hundred eleven".