320440203340 has 48 divisors (see below), whose sum is σ = 709820697600. Its totient is φ = 121176395712.

The previous prime is 320440203337. The next prime is 320440203361. The reversal of 320440203340 is 43302044023.

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, 698214 + ... + 1062253.

It is an arithmetic number, because the mean of its divisors is an integer number (14787931200).

Almost surely, 2^320440203340 is an apocalyptic number.

It is an amenable number.

320440203340 is an abundant number, since it is smaller than the sum of its proper divisors (389380494260).

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

320440203340 is a wasteful number, since it uses less digits than its factorization.

320440203340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760974 (or 1760972 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 320440203340 its reverse (43302044023), we get a palindrome (363742247363).

The spelling of 320440203340 in words is "three hundred twenty billion, four hundred forty million, two hundred three thousand, three hundred forty".