320323130112320 has 112 divisors (see below), whose sum is σ = 764841342704400. Its totient is φ = 127781496815616.

The previous prime is 320323130112253. The next prime is 320323130112379. The reversal of 320323130112320 is 23211031323023.

It can be written as a sum of positive squares in 8 ways, for example, as 42623035791424 + 277700094320896 = 6528632^2 + 16664336^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 320323130112320.

It is a congruent number.

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, 294432074 + ... + 295518006.

Almost surely, 2^{320323130112320} 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 320323130112320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382420671352200).

320323130112320 is an abundant number, since it is smaller than the sum of its proper divisors (444518212592080).

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

320323130112320 is a wasteful number, since it uses less digits than its factorization.

320323130112320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088452 (or 1088442 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 320323130112320 its reverse (23211031323023), we get a palindrome (343534161435343).

The spelling of 320323130112320 in words is "three hundred twenty trillion, three hundred twenty-three billion, one hundred thirty million, one hundred twelve thousand, three hundred twenty".