12323230140 has 192 divisors, whose sum is σ = 39558758400. Its totient is φ = 2841163776.

The previous prime is 12323230111. The next prime is 12323230141. The reversal of 12323230140 is 4103232321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12323230141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1314309 + ... + 1323651.

It is an arithmetic number, because the mean of its divisors is an integer number (206035200).

Almost surely, 2^12323230140 is an apocalyptic number.

12323230140 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 12323230140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19779379200).

12323230140 is an abundant number, since it is smaller than the sum of its proper divisors (27235528260).

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

12323230140 is a wasteful number, since it uses less digits than its factorization.

12323230140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9476 (or 9474 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 12323230140 its reverse (4103232321), we get a palindrome (16426462461).

The spelling of 12323230140 in words is "twelve billion, three hundred twenty-three million, two hundred thirty thousand, one hundred forty".