12311321031120 has 160 divisors (see below), whose sum is σ = 39863092598784. Its totient is φ = 3137231680000.

The previous prime is 12311321031091. The next prime is 12311321031133. The reversal of 12311321031120 is 2113012311321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4609495 + ... + 6772745.

Almost surely, 2^{12311321031120} is an apocalyptic number.

12311321031120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12311321031120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19931546299392).

12311321031120 is an abundant number, since it is smaller than the sum of its proper divisors (27551771567664).

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

12311321031120 is a wasteful number, since it uses less digits than its factorization.

12311321031120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164321 (or 2164315 counting only the distinct ones).

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

Adding to 12311321031120 its reverse (2113012311321), we get a palindrome (14424333342441).

The spelling of 12311321031120 in words is "twelve trillion, three hundred eleven billion, three hundred twenty-one million, thirty-one thousand, one hundred twenty".