320344023340 has 24 divisors (see below), whose sum is σ = 733879035792. Its totient is φ = 116488735680.

The previous prime is 320344023331. The next prime is 320344023341. The reversal of 320344023340 is 43320443023.

It is a junction number, because it is equal to n+sod(n) for n = 320344023299 and 320344023308.

It is not an unprimeable number, because it can be changed into a prime (320344023341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728054379 + ... + 728054818.

It is an arithmetic number, because the mean of its divisors is an integer number (30578293158).

Almost surely, 2^320344023340 is an apocalyptic number.

It is an amenable number.

320344023340 is an abundant number, since it is smaller than the sum of its proper divisors (413535012452).

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

320344023340 is a wasteful number, since it uses less digits than its factorization.

320344023340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456109217 (or 1456109215 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 320344023340 its reverse (43320443023), we get a palindrome (363664466363).

The spelling of 320344023340 in words is "three hundred twenty billion, three hundred forty-four million, twenty-three thousand, three hundred forty".