12311311231200 has 72 divisors (see below), whose sum is σ = 40073318065368. Its totient is φ = 3283016327680.

The previous prime is 12311311231147. The next prime is 12311311231201. The reversal of 12311311231200 is 213211311321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311311231201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2564854107 + ... + 2564858906.

It is an arithmetic number, because the mean of its divisors is an integer number (556573862019).

Almost surely, 2^{12311311231200} is an apocalyptic number.

12311311231200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12311311231200 is an abundant number, since it is smaller than the sum of its proper divisors (27762006834168).

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

12311311231200 is a wasteful number, since it uses less digits than its factorization.

12311311231200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129713036 (or 5129713023 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 12311311231200 its reverse (213211311321), we get a palindrome (12524522542521).

The spelling of 12311311231200 in words is "twelve trillion, three hundred eleven billion, three hundred eleven million, two hundred thirty-one thousand, two hundred".