311113112111 has 2 divisors, whose sum is σ = 311113112112. Its totient is φ = 311113112110.

The previous prime is 311113112077. The next prime is 311113112129. The reversal of 311113112111 is 111211311113.

It is a happy number.

It is a m-pointer prime, because the next prime (311113112129) can be obtained adding 311113112111 to its product of digits (18).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311113112111 - 2⁶ = 311113112047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311113112111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311113112711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155556556055 + 155556556056.

It is an arithmetic number, because the mean of its divisors is an integer number (155556556056).

Almost surely, 2^311113112111 is an apocalyptic number.

311113112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

311113112111 is an equidigital number, since it uses as much as digits as its factorization.

311113112111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18, while the sum is 17.

Adding to 311113112111 its reverse (111211311113), we get a palindrome (422324423224).

The spelling of 311113112111 in words is "three hundred eleven billion, one hundred thirteen million, one hundred twelve thousand, one hundred eleven".