320031115240 has 128 divisors (see below), whose sum is σ = 773559745920. Its totient is φ = 118726041600.

The previous prime is 320031115171. The next prime is 320031115267. The reversal of 320031115240 is 42511130023.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75996735 + ... + 76000945.

It is an arithmetic number, because the mean of its divisors is an integer number (6043435515).

Almost surely, 2^320031115240 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 320031115240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386779872960).

320031115240 is an abundant number, since it is smaller than the sum of its proper divisors (453528630680).

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

320031115240 is a wasteful number, since it uses less digits than its factorization.

320031115240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5843 (or 5839 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 320031115240 its reverse (42511130023), we get a palindrome (362542245263).

The spelling of 320031115240 in words is "three hundred twenty billion, thirty-one million, one hundred fifteen thousand, two hundred forty".