113787109 has 2 divisors, whose sum is σ = 113787110. Its totient is φ = 113787108.

The previous prime is 113787101. The next prime is 113787139. The reversal of 113787109 is 901787311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86434209 + 27352900 = 9297^2 + 5230^2 .

It is a cyclic number.

It is not a de Polignac number, because 113787109 - 2³ = 113787101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113787101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56893554 + 56893555.

It is an arithmetic number, because the mean of its divisors is an integer number (56893555).

Almost surely, 2^113787109 is an apocalyptic number.

It is an amenable number.

113787109 is a deficient number, since it is larger than the sum of its proper divisors (1).

113787109 is an equidigital number, since it uses as much as digits as its factorization.

113787109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 37.

The square root of 113787109 is about 10667.1040587406. The cubic root of 113787109 is about 484.5787379005.

The spelling of 113787109 in words is "one hundred thirteen million, seven hundred eighty-seven thousand, one hundred nine".