13305239 has 2 divisors, whose sum is σ = 13305240. Its totient is φ = 13305238.

The previous prime is 13305223. The next prime is 13305241. The reversal of 13305239 is 93250331.

13305239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13305239 - 2⁴ = 13305223 is a prime.

Together with 13305241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13305209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6652619 + 6652620.

It is an arithmetic number, because the mean of its divisors is an integer number (6652620).

Almost surely, 2^13305239 is an apocalyptic number.

13305239 is a deficient number, since it is larger than the sum of its proper divisors (1).

13305239 is an equidigital number, since it uses as much as digits as its factorization.

13305239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 13305239 is about 3647.6347130709. The cubic root of 13305239 is about 236.9595556093.

The spelling of 13305239 in words is "thirteen million, three hundred five thousand, two hundred thirty-nine".