12232311320 has 32 divisors (see below), whose sum is σ = 27600700320. Its totient is φ = 4879057920.

The previous prime is 12232311319. The next prime is 12232311323. The reversal of 12232311320 is 2311323221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12232311292 and 12232311301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12232311323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419036 + ... + 447275.

It is an arithmetic number, because the mean of its divisors is an integer number (862521885).

Almost surely, 2^12232311320 is an apocalyptic number.

12232311320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12232311320 is an abundant number, since it is smaller than the sum of its proper divisors (15368389000).

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

12232311320 is a wasteful number, since it uses less digits than its factorization.

12232311320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866675 (or 866671 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12232311320 its reverse (2311323221), we get a palindrome (14543634541).

The spelling of 12232311320 in words is "twelve billion, two hundred thirty-two million, three hundred eleven thousand, three hundred twenty".