13126523 has 4 divisors (see below), whose sum is σ = 13133808. Its totient is φ = 13119240.

The previous prime is 13126517. The next prime is 13126541. The reversal of 13126523 is 32562131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 32562131 = 7 ⋅4651733.

It is a cyclic number.

It is not a de Polignac number, because 13126523 - 2⁴ = 13126507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13126723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265 + ... + 5277.

It is an arithmetic number, because the mean of its divisors is an integer number (3283452).

Almost surely, 2^13126523 is an apocalyptic number.

13126523 is a deficient number, since it is larger than the sum of its proper divisors (7285).

13126523 is an equidigital number, since it uses as much as digits as its factorization.

13126523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7284.

The product of its digits is 1080, while the sum is 23.

The square root of 13126523 is about 3623.0543744195. The cubic root of 13126523 is about 235.8938225333.

Adding to 13126523 its reverse (32562131), we get a palindrome (45688654).

The spelling of 13126523 in words is "thirteen million, one hundred twenty-six thousand, five hundred twenty-three".