113111312191 has 2 divisors, whose sum is σ = 113111312192. Its totient is φ = 113111312190.

The previous prime is 113111312179. The next prime is 113111312201. The reversal of 113111312191 is 191213111311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113111312191 - 2⁷ = 113111312063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113111312101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56555656095 + 56555656096.

It is an arithmetic number, because the mean of its divisors is an integer number (56555656096).

Almost surely, 2^113111312191 is an apocalyptic number.

113111312191 is a deficient number, since it is larger than the sum of its proper divisors (1).

113111312191 is an equidigital number, since it uses as much as digits as its factorization.

113111312191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 25.

The spelling of 113111312191 in words is "one hundred thirteen billion, one hundred eleven million, three hundred twelve thousand, one hundred ninety-one".