13045309 has 2 divisors, whose sum is σ = 13045310. Its totient is φ = 13045308.

The previous prime is 13045303. The next prime is 13045321. The reversal of 13045309 is 90354031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12996025 + 49284 = 3605^2 + 222^2 .

It is a cyclic number.

It is not a de Polignac number, because 13045309 - 2¹³ = 13037117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13045303) 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, 6522654 + 6522655.

It is an arithmetic number, because the mean of its divisors is an integer number (6522655).

Almost surely, 2^13045309 is an apocalyptic number.

It is an amenable number.

13045309 is a deficient number, since it is larger than the sum of its proper divisors (1).

13045309 is an equidigital number, since it uses as much as digits as its factorization.

13045309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 13045309 is about 3611.8290380360. The cubic root of 13045309 is about 235.4063228528.

The spelling of 13045309 in words is "thirteen million, forty-five thousand, three hundred nine".