12523913 has 2 divisors, whose sum is σ = 12523914. Its totient is φ = 12523912.

The previous prime is 12523909. The next prime is 12523919. The reversal of 12523913 is 31932521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11888704 + 635209 = 3448^2 + 797^2 .

It is a cyclic number.

It is not a de Polignac number, because 12523913 - 2² = 12523909 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12523919) 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 as a sum of consecutive naturals, namely, 6261956 + 6261957.

It is an arithmetic number, because the mean of its divisors is an integer number (6261957).

Almost surely, 2^12523913 is an apocalyptic number.

It is an amenable number.

12523913 is a deficient number, since it is larger than the sum of its proper divisors (1).

12523913 is an equidigital number, since it uses as much as digits as its factorization.

12523913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 26.

The square root of 12523913 is about 3538.9140989857. The cubic root of 12523913 is about 232.2273398274.

The spelling of 12523913 in words is "twelve million, five hundred twenty-three thousand, nine hundred thirteen".