113111287 has 2 divisors, whose sum is σ = 113111288. Its totient is φ = 113111286.

The previous prime is 113111279. The next prime is 113111311. The reversal of 113111287 is 782111311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113111287 - 2³ = 113111279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113111227) 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 as a sum of consecutive naturals, namely, 56555643 + 56555644.

It is an arithmetic number, because the mean of its divisors is an integer number (56555644).

Almost surely, 2^113111287 is an apocalyptic number.

113111287 is a deficient number, since it is larger than the sum of its proper divisors (1).

113111287 is an equidigital number, since it uses as much as digits as its factorization.

113111287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 25.

The square root of 113111287 is about 10635.3790247457. The cubic root of 113111287 is about 483.6174706114.

Adding to 113111287 its reverse (782111311), we get a palindrome (895222598).

The spelling of 113111287 in words is "one hundred thirteen million, one hundred eleven thousand, two hundred eighty-seven".