31112323111 has 16 divisors (see below), whose sum is σ = 31719448800. Its totient is φ = 30510563328.

The previous prime is 31112323093. The next prime is 31112323127. The reversal of 31112323111 is 11132321113.

It is a cyclic number.

It is not a de Polignac number, because 31112323111 - 2²³ = 31103934503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112323811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13300380 + ... + 13302718.

It is an arithmetic number, because the mean of its divisors is an integer number (1982465550).

Almost surely, 2^31112323111 is an apocalyptic number.

31112323111 is a deficient number, since it is larger than the sum of its proper divisors (607125689).

31112323111 is a wasteful number, since it uses less digits than its factorization.

31112323111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378.

The product of its digits is 108, while the sum is 19.

Adding to 31112323111 its reverse (11132321113), we get a palindrome (42244644224).

The spelling of 31112323111 in words is "thirty-one billion, one hundred twelve million, three hundred twenty-three thousand, one hundred eleven".