320321352000 has 448 divisors, whose sum is σ = 1149634886400. Its totient is φ = 78116659200.

The previous prime is 320321351993. The next prime is 320321352049. The reversal of 320321352000 is 253123023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34003291 + ... + 34012709.

It is an arithmetic number, because the mean of its divisors is an integer number (2566149300).

Almost surely, 2^320321352000 is an apocalyptic number.

320321352000 is a gapful number since it is divisible by the number (30) 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 320321352000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574817443200).

320321352000 is an abundant number, since it is smaller than the sum of its proper divisors (829313534400).

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

320321352000 is a wasteful number, since it uses less digits than its factorization.

320321352000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9571 (or 9551 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

Adding to 320321352000 its reverse (253123023), we get a palindrome (320574475023).

The spelling of 320321352000 in words is "three hundred twenty billion, three hundred twenty-one million, three hundred fifty-two thousand".