13100209 has 2 divisors, whose sum is σ = 13100210. Its totient is φ = 13100208.

The previous prime is 13100207. The next prime is 13100221. The reversal of 13100209 is 90200131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10909809 + 2190400 = 3303^2 + 1480^2 .

It is a cyclic number.

It is not a de Polignac number, because 13100209 - 2¹ = 13100207 is a prime.

Together with 13100207, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13100192 and 13100201.

It is not a weakly prime, because it can be changed into another prime (13100207) 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, 6550104 + 6550105.

It is an arithmetic number, because the mean of its divisors is an integer number (6550105).

Almost surely, 2^13100209 is an apocalyptic number.

It is an amenable number.

13100209 is a deficient number, since it is larger than the sum of its proper divisors (1).

13100209 is an equidigital number, since it uses as much as digits as its factorization.

13100209 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 16.

The square root of 13100209 is about 3619.4210863065. The cubic root of 13100209 is about 235.7360894082.

The spelling of 13100209 in words is "thirteen million, one hundred thousand, two hundred nine".