13316209 has 2 divisors, whose sum is σ = 13316210. Its totient is φ = 13316208.

The previous prime is 13316179. The next prime is 13316213. The reversal of 13316209 is 90261331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11242609 + 2073600 = 3353^2 + 1440^2 .

It is an emirp because it is prime and its reverse (90261331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13316209 - 2⁹ = 13315697 is a prime.

It is not a weakly prime, because it can be changed into another prime (13316509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6658104 + 6658105.

It is an arithmetic number, because the mean of its divisors is an integer number (6658105).

Almost surely, 2^13316209 is an apocalyptic number.

It is an amenable number.

13316209 is a deficient number, since it is larger than the sum of its proper divisors (1).

13316209 is an equidigital number, since it uses as much as digits as its factorization.

13316209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 13316209 is about 3649.1381174190. The cubic root of 13316209 is about 237.0246610976.

The spelling of 13316209 in words is "thirteen million, three hundred sixteen thousand, two hundred nine".