113697109 has 2 divisors, whose sum is σ = 113697110. Its totient is φ = 113697108.

The previous prime is 113697091. The next prime is 113697113. The reversal of 113697109 is 901796311.

Together with previous prime (113697091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95121009 + 18576100 = 9753^2 + 4310^2 .

It is a cyclic number.

It is not a de Polignac number, because 113697109 - 2¹³ = 113688917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113697169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56848554 + 56848555.

It is an arithmetic number, because the mean of its divisors is an integer number (56848555).

Almost surely, 2^113697109 is an apocalyptic number.

It is an amenable number.

113697109 is a deficient number, since it is larger than the sum of its proper divisors (1).

113697109 is an equidigital number, since it uses as much as digits as its factorization.

113697109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 113697109 is about 10662.8846472238. The cubic root of 113697109 is about 484.4509448953.

The spelling of 113697109 in words is "one hundred thirteen million, six hundred ninety-seven thousand, one hundred nine".