13100809 has 2 divisors, whose sum is σ = 13100810. Its totient is φ = 13100808.

The previous prime is 13100783. The next prime is 13100821. The reversal of 13100809 is 90800131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10368400 + 2732409 = 3220^2 + 1653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13100809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13100809.

It is not a weakly prime, because it can be changed into another prime (13100209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6550404 + 6550405.

It is an arithmetic number, because the mean of its divisors is an integer number (6550405).

Almost surely, 2^13100809 is an apocalyptic number.

It is an amenable number.

13100809 is a deficient number, since it is larger than the sum of its proper divisors (1).

13100809 is an equidigital number, since it uses as much as digits as its factorization.

13100809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 13100809 is about 3619.5039715409. The cubic root of 13100809 is about 235.7396883201.

The spelling of 13100809 in words is "thirteen million, one hundred thousand, eight hundred nine".