12312033312 has 48 divisors (see below), whose sum is σ = 32632891200. Its totient is φ = 4064163072.

The previous prime is 12312033289. The next prime is 12312033313. The reversal of 12312033312 is 21333021321.

12312033312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (12312033313) 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 7 ways as a sum of consecutive naturals, for example, 612687 + ... + 632462.

It is an arithmetic number, because the mean of its divisors is an integer number (679851900).

Almost surely, 2^12312033312 is an apocalyptic number.

12312033312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12312033312 is an abundant number, since it is smaller than the sum of its proper divisors (20320857888).

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

12312033312 is a wasteful number, since it uses less digits than its factorization.

12312033312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245265 (or 1245257 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12312033312 its reverse (21333021321), we get a palindrome (33645054633).

The spelling of 12312033312 in words is "twelve billion, three hundred twelve million, thirty-three thousand, three hundred twelve".