113512639 has 2 divisors, whose sum is σ = 113512640. Its totient is φ = 113512638.

The previous prime is 113512627. The next prime is 113512649. The reversal of 113512639 is 936215311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113512639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113512639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113512649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56756319 + 56756320.

It is an arithmetic number, because the mean of its divisors is an integer number (56756320).

Almost surely, 2^113512639 is an apocalyptic number.

113512639 is a deficient number, since it is larger than the sum of its proper divisors (1).

113512639 is an equidigital number, since it uses as much as digits as its factorization.

113512639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 31.

The square root of 113512639 is about 10654.2310374799. The cubic root of 113512639 is about 484.1888009067.

The spelling of 113512639 in words is "one hundred thirteen million, five hundred twelve thousand, six hundred thirty-nine".