12311032128 has 28 divisors (see below), whose sum is σ = 32572939680. Its totient is φ = 4103677312.

The previous prime is 12311032127. The next prime is 12311032177. The reversal of 12311032128 is 82123011321.

12311032128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 12311032098 and 12311032107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311032127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32059788 + ... + 32060171.

Almost surely, 2^12311032128 is an apocalyptic number.

It is an amenable number.

12311032128 is an abundant number, since it is smaller than the sum of its proper divisors (20261907552).

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

12311032128 is an equidigital number, since it uses as much as digits as its factorization.

12311032128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64119974 (or 64119964 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 12311032128 its reverse (82123011321), we get a palindrome (94434043449).

The spelling of 12311032128 in words is "twelve billion, three hundred eleven million, thirty-two thousand, one hundred twenty-eight".