13224309 has 16 divisors (see below), whose sum is σ = 20234880. Its totient is φ = 7525440.

The previous prime is 13224271. The next prime is 13224313. The reversal of 13224309 is 90342231.

It is not a de Polignac number, because 13224309 - 2¹² = 13220213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220309) 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 in 15 ways as a sum of consecutive naturals, for example, 4479 + ... + 6819.

It is an arithmetic number, because the mean of its divisors is an integer number (1264680).

Almost surely, 2^13224309 is an apocalyptic number.

It is an amenable number.

13224309 is a deficient number, since it is larger than the sum of its proper divisors (7010571).

13224309 is a wasteful number, since it uses less digits than its factorization.

13224309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 13224309 is about 3636.5243021325. The cubic root of 13224309 is about 236.4781374543.

The spelling of 13224309 in words is "thirteen million, two hundred twenty-four thousand, three hundred nine".