12396523 has 4 divisors (see below), whose sum is σ = 12403720. Its totient is φ = 12389328.

The previous prime is 12396511. The next prime is 12396533. The reversal of 12396523 is 32569321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12396523 - 2⁵ = 12396491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12396533) 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, 688 + ... + 5026.

It is an arithmetic number, because the mean of its divisors is an integer number (3100930).

Almost surely, 2^12396523 is an apocalyptic number.

12396523 is a deficient number, since it is larger than the sum of its proper divisors (7197).

12396523 is an equidigital number, since it uses as much as digits as its factorization.

12396523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7196.

The product of its digits is 9720, while the sum is 31.

The square root of 12396523 is about 3520.8696368937. The cubic root of 12396523 is about 231.4372694890.

The spelling of 12396523 in words is "twelve million, three hundred ninety-six thousand, five hundred twenty-three".