320304320340 has 96 divisors (see below), whose sum is σ = 903227848320. Its totient is φ = 84808290816.

The previous prime is 320304320339. The next prime is 320304320341. The reversal of 320304320340 is 43023403023.

It is an interprime number because it is at equal distance from previous prime (320304320339) and next prime (320304320341).

It is a self number, because there is not a number n which added to its sum of digits gives 320304320340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320304320341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10439502 + ... + 10470138.

It is an arithmetic number, because the mean of its divisors is an integer number (9408623420).

Almost surely, 2^320304320340 is an apocalyptic number.

320304320340 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 320304320340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451613924160).

320304320340 is an abundant number, since it is smaller than the sum of its proper divisors (582923527980).

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

320304320340 is a wasteful number, since it uses less digits than its factorization.

320304320340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31881 (or 31879 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 24.

Adding to 320304320340 its reverse (43023403023), we get a palindrome (363327723363).

The spelling of 320304320340 in words is "three hundred twenty billion, three hundred four million, three hundred twenty thousand, three hundred forty".