12323213252 has 72 divisors (see below), whose sum is σ = 26339745600. Its totient is φ = 5022997056.

The previous prime is 12323213237. The next prime is 12323213291. The reversal of 12323213252 is 25231232321.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 364649 + ... + 397007.

It is an arithmetic number, because the mean of its divisors is an integer number (365829800).

Almost surely, 2^12323213252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12323213252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13169872800).

12323213252 is an abundant number, since it is smaller than the sum of its proper divisors (14016532348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12323213252 is a wasteful number, since it uses less digits than its factorization.

12323213252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32473 (or 32464 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

Adding to 12323213252 its reverse (25231232321), we get a palindrome (37554445573).

The spelling of 12323213252 in words is "twelve billion, three hundred twenty-three million, two hundred thirteen thousand, two hundred fifty-two".