113566109 has 2 divisors, whose sum is σ = 113566110. Its totient is φ = 113566108.

The previous prime is 113566093. The next prime is 113566153. The reversal of 113566109 is 901665311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112572100 + 994009 = 10610^2 + 997^2 .

It is a cyclic number.

It is not a de Polignac number, because 113566109 - 2⁴ = 113566093 is a prime.

It is a super-2 number, since 2×113566109² = 25794522226799762, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113566169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56783054 + 56783055.

It is an arithmetic number, because the mean of its divisors is an integer number (56783055).

Almost surely, 2^113566109 is an apocalyptic number.

It is an amenable number.

113566109 is a deficient number, since it is larger than the sum of its proper divisors (1).

113566109 is an equidigital number, since it uses as much as digits as its factorization.

113566109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 113566109 is about 10656.7400737749. The cubic root of 113566109 is about 484.2648145013.

The spelling of 113566109 in words is "one hundred thirteen million, five hundred sixty-six thousand, one hundred nine".