12523213 has 4 divisors (see below), whose sum is σ = 12537760. Its totient is φ = 12508668.

The previous prime is 12523183. The next prime is 12523219. The reversal of 12523213 is 31232521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12523213 - 2⁹ = 12522701 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 (12523219) 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, 5895 + ... + 7732.

It is an arithmetic number, because the mean of its divisors is an integer number (3134440).

Almost surely, 2^12523213 is an apocalyptic number.

It is an amenable number.

12523213 is a deficient number, since it is larger than the sum of its proper divisors (14547).

12523213 is an equidigital number, since it uses as much as digits as its factorization.

12523213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14546.

The product of its digits is 360, while the sum is 19.

The square root of 12523213 is about 3538.8151972094. The cubic root of 12523213 is about 232.2230131134.

Adding to 12523213 its reverse (31232521), we get a palindrome (43755734).

It can be divided in two parts, 1252 and 3213, that added together give a triangular number (4465 = T₉₄).

The spelling of 12523213 in words is "twelve million, five hundred twenty-three thousand, two hundred thirteen".