321230232320 has 144 divisors (see below), whose sum is σ = 803466639360. Its totient is φ = 122818916352.

The previous prime is 321230232313. The next prime is 321230232341. The reversal of 321230232320 is 23232032123.

It is a super-2 number, since 2×321230232320² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55314857 + ... + 55320663.

It is an arithmetic number, because the mean of its divisors is an integer number (5579629440).

Almost surely, 2^321230232320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321230232320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401733319680).

321230232320 is an abundant number, since it is smaller than the sum of its proper divisors (482236407040).

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

321230232320 is a wasteful number, since it uses less digits than its factorization.

321230232320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7730 (or 7716 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 321230232320 its reverse (23232032123), we get a palindrome (344462264443).

The spelling of 321230232320 in words is "three hundred twenty-one billion, two hundred thirty million, two hundred thirty-two thousand, three hundred twenty".