320123200000 has 240 divisors, whose sum is σ = 834330974400. Its totient is φ = 122467840000.

The previous prime is 320123199923. The next prime is 320123200013. The reversal of 320123200000 is 2321023.

It is a happy 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, 36795651 + ... + 36804349.

It is an arithmetic number, because the mean of its divisors is an integer number (3476379060).

Almost surely, 2^320123200000 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 320123200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417165487200).

320123200000 is an abundant number, since it is smaller than the sum of its proper divisors (514207774400).

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

320123200000 is an frugal number, since it uses more digits than its factorization.

320123200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8765 (or 8729 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 320123200000 its reverse (2321023), we get a palindrome (320125521023).

The spelling of 320123200000 in words is "three hundred twenty billion, one hundred twenty-three million, two hundred thousand".