12813259 has 4 divisors (see below), whose sum is σ = 12855304. Its totient is φ = 12771216.

The previous prime is 12813253. The next prime is 12813263. The reversal of 12813259 is 95231821.

12813259 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: 95231821 = 37 ⋅2573833.

It is a cyclic number.

It is not a de Polignac number, because 12813259 - 2⁷ = 12813131 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 12813259.

It is not an unprimeable number, because it can be changed into a prime (12813253) 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, 20562 + ... + 21175.

It is an arithmetic number, because the mean of its divisors is an integer number (3213826).

Almost surely, 2^12813259 is an apocalyptic number.

12813259 is a deficient number, since it is larger than the sum of its proper divisors (42045).

12813259 is an equidigital number, since it uses as much as digits as its factorization.

12813259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42044.

The product of its digits is 4320, while the sum is 31.

The square root of 12813259 is about 3579.5612859679. The cubic root of 12813259 is about 234.0021610826.

The spelling of 12813259 in words is "twelve million, eight hundred thirteen thousand, two hundred fifty-nine".