13241209 has 4 divisors (see below), whose sum is σ = 13458340. Its totient is φ = 13024080.

The previous prime is 13241203. The next prime is 13241219. The reversal of 13241209 is 90214231.

13241209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3920400 + 9320809 = 1980^2 + 3053^2 .

It is a cyclic number.

It is not a de Polignac number, because 13241209 - 2⁵ = 13241177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13241209.

It is not an unprimeable number, because it can be changed into a prime (13241203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108474 + ... + 108595.

It is an arithmetic number, because the mean of its divisors is an integer number (3364585).

Almost surely, 2^13241209 is an apocalyptic number.

It is an amenable number.

13241209 is a deficient number, since it is larger than the sum of its proper divisors (217131).

13241209 is an equidigital number, since it uses as much as digits as its factorization.

13241209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217130.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 13241209 is about 3638.8472075645. The cubic root of 13241209 is about 236.5788302844.

The spelling of 13241209 in words is "thirteen million, two hundred forty-one thousand, two hundred nine".