320351220346 has 16 divisors (see below), whose sum is σ = 486001209600. Its totient is φ = 158351374368.

The previous prime is 320351220337. The next prime is 320351220379. The reversal of 320351220346 is 643022153023.

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, 1042231 + ... + 1314133.

It is an arithmetic number, because the mean of its divisors is an integer number (30375075600).

Almost surely, 2^320351220346 is an apocalyptic number.

320351220346 is a deficient number, since it is larger than the sum of its proper divisors (165649989254).

320351220346 is a wasteful number, since it uses less digits than its factorization.

320351220346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278613.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 320351220346 its reverse (643022153023), we get a palindrome (963373373369).

The spelling of 320351220346 in words is "three hundred twenty billion, three hundred fifty-one million, two hundred twenty thousand, three hundred forty-six".