13133209 has 2 divisors, whose sum is σ = 13133210. Its totient is φ = 13133208.

The previous prime is 13133203. The next prime is 13133213. The reversal of 13133209 is 90233131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11923209 + 1210000 = 3453^2 + 1100^2 .

It is an emirp because it is prime and its reverse (90233131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13133209 - 2⁵ = 13133177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13133209.

It is not a weakly prime, because it can be changed into another prime (13133203) 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, 6566604 + 6566605.

It is an arithmetic number, because the mean of its divisors is an integer number (6566605).

Almost surely, 2^13133209 is an apocalyptic number.

It is an amenable number.

13133209 is a deficient number, since it is larger than the sum of its proper divisors (1).

13133209 is an equidigital number, since it uses as much as digits as its factorization.

13133209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 13133209 is about 3623.9769590879. The cubic root of 13133209 is about 235.9338666078.

The spelling of 13133209 in words is "thirteen million, one hundred thirty-three thousand, two hundred nine".