113206609 has 2 divisors, whose sum is σ = 113206610. Its totient is φ = 113206608.

The previous prime is 113206603. The next prime is 113206649. The reversal of 113206609 is 906602311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92929600 + 20277009 = 9640^2 + 4503^2 .

It is an emirp because it is prime and its reverse (906602311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113206609 - 2⁷ = 113206481 is a prime.

It is not a weakly prime, because it can be changed into another prime (113206603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56603304 + 56603305.

It is an arithmetic number, because the mean of its divisors is an integer number (56603305).

Almost surely, 2^113206609 is an apocalyptic number.

It is an amenable number.

113206609 is a deficient number, since it is larger than the sum of its proper divisors (1).

113206609 is an equidigital number, since it uses as much as digits as its factorization.

113206609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 113206609 is about 10639.8594445603. The cubic root of 113206609 is about 483.7532850589.

The spelling of 113206609 in words is "one hundred thirteen million, two hundred six thousand, six hundred nine".