12031320120312 has 32 divisors (see below), whose sum is σ = 30097446353280. Its totient is φ = 4007887233120.

The previous prime is 12031320120311. The next prime is 12031320120317. The reversal of 12031320120312 is 21302102313021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031320120311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159511948 + ... + 159587355.

It is an arithmetic number, because the mean of its divisors is an integer number (940545198540).

Almost surely, 2^{12031320120312} is an apocalyptic number.

12031320120312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12031320120312 is an abundant number, since it is smaller than the sum of its proper divisors (18066126232968).

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

12031320120312 is a wasteful number, since it uses less digits than its factorization.

12031320120312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319100883 (or 319100879 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12031320120312 its reverse (21302102313021), we get a palindrome (33333422433333).

The spelling of 12031320120312 in words is "twelve trillion, thirty-one billion, three hundred twenty million, one hundred twenty thousand, three hundred twelve".