232320311220 has 96 divisors (see below), whose sum is σ = 689299632000. Its totient is φ = 58262278144.

The previous prime is 232320311183. The next prime is 232320311227. The reversal of 232320311220 is 22113023232.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232320311227) by changing a digit.

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, 1226431 + ... + 1403129.

It is an arithmetic number, because the mean of its divisors is an integer number (7180204500).

Almost surely, 2^232320311220 is an apocalyptic number.

232320311220 is a gapful number since it is divisible by the number (20) 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 232320311220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344649816000).

232320311220 is an abundant number, since it is smaller than the sum of its proper divisors (456979320780).

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

232320311220 is a wasteful number, since it uses less digits than its factorization.

232320311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178017 (or 178015 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 232320311220 its reverse (22113023232), we get a palindrome (254433334452).

The spelling of 232320311220 in words is "two hundred thirty-two billion, three hundred twenty million, three hundred eleven thousand, two hundred twenty".