12323857320 has 128 divisors (see below), whose sum is σ = 41113353600. Its totient is φ = 3283656192.

The previous prime is 12323857307. The next prime is 12323857321. The reversal of 12323857320 is 2375832321.

12323857320 is a `hidden beast` number, since 1 + 2 + 32 + 38 + 573 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12323857321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1543659 + ... + 1551621.

It is an arithmetic number, because the mean of its divisors is an integer number (321198075).

Almost surely, 2^12323857320 is an apocalyptic number.

12323857320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12323857320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20556676800).

12323857320 is an abundant number, since it is smaller than the sum of its proper divisors (28789496280).

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

12323857320 is a wasteful number, since it uses less digits than its factorization.

12323857320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9416 (or 9406 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 12323857320 in words is "twelve billion, three hundred twenty-three million, eight hundred fifty-seven thousand, three hundred twenty".