13109215 has 12 divisors (see below), whose sum is σ = 18299736. Its totient is φ = 8989008.

The previous prime is 13109203. The next prime is 13109237. The reversal of 13109215 is 51290131.

It is not a de Polignac number, because 13109215 - 2⁷ = 13109087 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 26509 + ... + 26998.

It is an arithmetic number, because the mean of its divisors is an integer number (1524978).

Almost surely, 2^13109215 is an apocalyptic number.

13109215 is a deficient number, since it is larger than the sum of its proper divisors (5190521).

13109215 is an equidigital number, since it uses as much as digits as its factorization.

13109215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53526 (or 53519 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 13109215 is about 3620.6649941689. The cubic root of 13109215 is about 235.7900975261.

Adding to 13109215 its reverse (51290131), we get a palindrome (64399346).

The spelling of 13109215 in words is "thirteen million, one hundred nine thousand, two hundred fifteen".