320331000000 has 784 divisors, whose sum is σ = 1225851808896. Its totient is φ = 72960000000.

The previous prime is 320330999999. The next prime is 320331000013. The reversal of 320331000000 is 133023.

It is a happy number.

It is a super-2 number, since 2×320331000000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 320331000000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 560999715 + ... + 561000285.

Almost surely, 2^320331000000 is an apocalyptic number.

320331000000 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 320331000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (612925904448).

320331000000 is an abundant number, since it is smaller than the sum of its proper divisors (905520808896).

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

320331000000 is an equidigital number, since it uses as much as digits as its factorization.

320331000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

Adding to 320331000000 its reverse (133023), we get a palindrome (320331133023).

The spelling of 320331000000 in words is "three hundred twenty billion, three hundred thirty-one million", and thus it is an aban number.