12523534213 has 4 divisors (see below), whose sum is σ = 12538751968. Its totient is φ = 12508316460.

The previous prime is 12523534187. The next prime is 12523534229. The reversal of 12523534213 is 31243532521.

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 12523534213 - 2¹³ = 12523526021 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 (12523534253) 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, 7607643 + ... + 7609288.

It is an arithmetic number, because the mean of its divisors is an integer number (3134687992).

Almost surely, 2^12523534213 is an apocalyptic number.

It is an amenable number.

12523534213 is a deficient number, since it is larger than the sum of its proper divisors (15217755).

12523534213 is an equidigital number, since it uses as much as digits as its factorization.

12523534213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15217754.

The product of its digits is 21600, while the sum is 31.

The spelling of 12523534213 in words is "twelve billion, five hundred twenty-three million, five hundred thirty-four thousand, two hundred thirteen".