123320320331220 has 72 divisors (see below), whose sum is σ = 374080388887296. Its totient is φ = 32884649476032.

The previous prime is 123320320331191. The next prime is 123320320331249. The reversal of 123320320331220 is 22133023023321.

123320320331220 is a `hidden beast` number, since 1 + 2 + 3 + 3 + 2 + 0 + 320 + 3 + 312 + 20 = 666.

123320320331220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (123320320331191) and next prime (123320320331249).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276552 + ... + 15707231.

It is an arithmetic number, because the mean of its divisors is an integer number (5195560956768).

Almost surely, 2^{123320320331220} is an apocalyptic number.

123320320331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123320320331220 is an abundant number, since it is smaller than the sum of its proper divisors (250760068556076).

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

123320320331220 is a wasteful number, since it uses less digits than its factorization.

123320320331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16026661 (or 16026656 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 123320320331220 its reverse (22133023023321), we get a palindrome (145453343354541).

The spelling of 123320320331220 in words is "one hundred twenty-three trillion, three hundred twenty billion, three hundred twenty million, three hundred thirty-one thousand, two hundred twenty".