13243279 has 6 divisors (see below), whose sum is σ = 15405504. Its totient is φ = 11351340.

The previous prime is 13243273. The next prime is 13243297. The reversal of 13243279 is 97234231.

13243279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13243279 - 2³ = 13243271 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 13243279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13243271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135087 + ... + 135184.

It is an arithmetic number, because the mean of its divisors is an integer number (2567584).

Almost surely, 2^13243279 is an apocalyptic number.

13243279 is a deficient number, since it is larger than the sum of its proper divisors (2162225).

13243279 is an equidigital number, since it uses as much as digits as its factorization.

13243279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270285 (or 270278 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 13243279 is about 3639.1316271880. The cubic root of 13243279 is about 236.5911577756.

The spelling of 13243279 in words is "thirteen million, two hundred forty-three thousand, two hundred seventy-nine".