12523413 has 16 divisors (see below), whose sum is σ = 20088320. Its totient is φ = 6779376.

The previous prime is 12523393. The next prime is 12523417. The reversal of 12523413 is 31432521.

It is not a de Polignac number, because 12523413 - 2¹² = 12519317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 12523413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12523417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15295 + ... + 16092.

It is an arithmetic number, because the mean of its divisors is an integer number (1255520).

Almost surely, 2^12523413 is an apocalyptic number.

It is an amenable number.

12523413 is a deficient number, since it is larger than the sum of its proper divisors (7564907).

12523413 is a wasteful number, since it uses less digits than its factorization.

12523413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31416.

The product of its digits is 720, while the sum is 21.

The square root of 12523413 is about 3538.8434551418. The cubic root of 12523413 is about 232.2242493339.

Adding to 12523413 its reverse (31432521), we get a palindrome (43955934).

The spelling of 12523413 in words is "twelve million, five hundred twenty-three thousand, four hundred thirteen".