13243115 has 4 divisors (see below), whose sum is σ = 15891744. Its totient is φ = 10594488.

The previous prime is 13243091. The next prime is 13243121. The reversal of 13243115 is 51134231.

13243115 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, and also an emirpimes, since its reverse is a distinct semiprime: 51134231 = 167 ⋅306193.

It is a cyclic number.

It is not a de Polignac number, because 13243115 - 2¹⁶ = 13177579 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1324307 + ... + 1324316.

It is an arithmetic number, because the mean of its divisors is an integer number (3972936).

Almost surely, 2^13243115 is an apocalyptic number.

13243115 is a deficient number, since it is larger than the sum of its proper divisors (2648629).

13243115 is an equidigital number, since it uses as much as digits as its factorization.

13243115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648628.

The product of its digits is 360, while the sum is 20.

The square root of 13243115 is about 3639.1090942702. The cubic root of 13243115 is about 236.5901811517.

Adding to 13243115 its reverse (51134231), we get a palindrome (64377346).

The spelling of 13243115 in words is "thirteen million, two hundred forty-three thousand, one hundred fifteen".