113101909 has 2 divisors, whose sum is σ = 113101910. Its totient is φ = 113101908.

The previous prime is 113101907. The next prime is 113101913. The reversal of 113101909 is 909101311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110313009 + 2788900 = 10503^2 + 1670^2 .

It is a cyclic number.

It is not a de Polignac number, because 113101909 - 2¹ = 113101907 is a prime.

Together with 113101907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113101907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56550954 + 56550955.

It is an arithmetic number, because the mean of its divisors is an integer number (56550955).

Almost surely, 2^113101909 is an apocalyptic number.

It is an amenable number.

113101909 is a deficient number, since it is larger than the sum of its proper divisors (1).

113101909 is an equidigital number, since it uses as much as digits as its factorization.

113101909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243, while the sum is 25.

The square root of 113101909 is about 10634.9381286400. The cubic root of 113101909 is about 483.6041047482.

The spelling of 113101909 in words is "one hundred thirteen million, one hundred one thousand, nine hundred nine".