12313132231220 has 24 divisors (see below), whose sum is σ = 25857753318600. Its totient is φ = 4925219438592.

The previous prime is 12313132231193. The next prime is 12313132231273. The reversal of 12313132231220 is 2213223131321.

It can be written as a sum of positive squares in 4 ways, for example, as 470985728656 + 11842146502564 = 686284^2 + 3441242^2 .

It is a super-2 number, since 2×12313132231220² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12313132231220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1041716 + ... + 5070644.

It is an arithmetic number, because the mean of its divisors is an integer number (1077406388275).

Almost surely, 2^{12313132231220} is an apocalyptic number.

12313132231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12313132231220 is an abundant number, since it is smaller than the sum of its proper divisors (13544621087380).

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

12313132231220 is a wasteful number, since it uses less digits than its factorization.

12313132231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4181747 (or 4181745 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 12313132231220 its reverse (2213223131321), we get a palindrome (14526355362541).

The spelling of 12313132231220 in words is "twelve trillion, three hundred thirteen billion, one hundred thirty-two million, two hundred thirty-one thousand, two hundred twenty".