13136309 has 2 divisors, whose sum is σ = 13136310. Its totient is φ = 13136308.

The previous prime is 13136303. The next prime is 13136317. The reversal of 13136309 is 90363131.

13136309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8427409 + 4708900 = 2903^2 + 2170^2 .

It is an emirp because it is prime and its reverse (90363131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13136309 - 2⁴ = 13136293 is a prime.

It is a super-2 number, since 2×13136309² = 345125228286962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13136303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6568154 + 6568155.

It is an arithmetic number, because the mean of its divisors is an integer number (6568155).

Almost surely, 2^13136309 is an apocalyptic number.

It is an amenable number.

13136309 is a deficient number, since it is larger than the sum of its proper divisors (1).

13136309 is an equidigital number, since it uses as much as digits as its factorization.

13136309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 13136309 is about 3624.4046407652. The cubic root of 13136309 is about 235.9524286477.

The spelling of 13136309 in words is "thirteen million, one hundred thirty-six thousand, three hundred nine".