31112313111 has 40 divisors (see below), whose sum is σ = 50764057344. Its totient is φ = 18832700880.

The previous prime is 31112313083. The next prime is 31112313137. The reversal of 31112313111 is 11131321113.

31112313111 is a `hidden beast` number, since 311 + 12 + 31 + 311 + 1 = 666.

It is not a de Polignac number, because 31112313111 - 2⁵ = 31112313079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112313151) 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 39 ways as a sum of consecutive naturals, for example, 715746 + ... + 757968.

Almost surely, 2^31112313111 is an apocalyptic number.

31112313111 is a deficient number, since it is larger than the sum of its proper divisors (19651744233).

31112313111 is a wasteful number, since it uses less digits than its factorization.

31112313111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43073 (or 43064 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

Adding to 31112313111 its reverse (11131321113), we get a palindrome (42243634224).

The spelling of 31112313111 in words is "thirty-one billion, one hundred twelve million, three hundred thirteen thousand, one hundred eleven".