111311110111 has 2 divisors, whose sum is σ = 111311110112. Its totient is φ = 111311110110.

The previous prime is 111311110091. The next prime is 111311110123. The reversal of 111311110111 is 111011113111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111311110111 - 2²⁵ = 111277555679 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111311110091 and 111311110100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111311120111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55655555055 + 55655555056.

It is an arithmetic number, because the mean of its divisors is an integer number (55655555056).

Almost surely, 2^111311110111 is an apocalyptic number.

111311110111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111311110111 is an equidigital number, since it uses as much as digits as its factorization.

111311110111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3, while the sum is 13.

Adding to 111311110111 its reverse (111011113111), we get a palindrome (222322223222).

The spelling of 111311110111 in words is "one hundred eleven billion, three hundred eleven million, one hundred ten thousand, one hundred eleven".