320121404340 has 24 divisors (see below), whose sum is σ = 896339932320. Its totient is φ = 85365707808.

The previous prime is 320121404329. The next prime is 320121404359. The reversal of 320121404340 is 43404121023.

It is a super-2 number, since 2×320121404340² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320121404340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2667678310 + ... + 2667678429.

It is an arithmetic number, because the mean of its divisors is an integer number (37347497180).

Almost surely, 2^320121404340 is an apocalyptic number.

320121404340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320121404340 is an abundant number, since it is smaller than the sum of its proper divisors (576218527980).

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

320121404340 is a wasteful number, since it uses less digits than its factorization.

320121404340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5335356751 (or 5335356749 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 320121404340 its reverse (43404121023), we get a palindrome (363525525363).

The spelling of 320121404340 in words is "three hundred twenty billion, one hundred twenty-one million, four hundred four thousand, three hundred forty".