113001209 has 2 divisors, whose sum is σ = 113001210. Its totient is φ = 113001208.

The previous prime is 113001179. The next prime is 113001211. The reversal of 113001209 is 902100311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112423609 + 577600 = 10603^2 + 760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113001209 is a prime.

It is a Sophie Germain prime.

Together with 113001211, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (113001269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56500604 + 56500605.

It is an arithmetic number, because the mean of its divisors is an integer number (56500605).

Almost surely, 2^113001209 is an apocalyptic number.

It is an amenable number.

113001209 is a deficient number, since it is larger than the sum of its proper divisors (1).

113001209 is an equidigital number, since it uses as much as digits as its factorization.

113001209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 113001209 is about 10630.2026791590. The cubic root of 113001209 is about 483.4605368988.

The spelling of 113001209 in words is "one hundred thirteen million, one thousand, two hundred nine".