13256823 has 4 divisors (see below), whose sum is σ = 17675768. Its totient is φ = 8837880.

The previous prime is 13256819. The next prime is 13256827. The reversal of 13256823 is 32865231.

13256823 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (13256819) and next prime (13256827).

It is not a de Polignac number, because 13256823 - 2² = 13256819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13256827) 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, 2209468 + ... + 2209473.

It is an arithmetic number, because the mean of its divisors is an integer number (4418942).

Almost surely, 2^13256823 is an apocalyptic number.

13256823 is a deficient number, since it is larger than the sum of its proper divisors (4418945).

13256823 is an equidigital number, since it uses as much as digits as its factorization.

13256823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4418944.

The product of its digits is 8640, while the sum is 30.

The square root of 13256823 is about 3640.9920351465. The cubic root of 13256823 is about 236.6717848085.

The spelling of 13256823 in words is "thirteen million, two hundred fifty-six thousand, eight hundred twenty-three".