320123143220 has 48 divisors (see below), whose sum is σ = 681660826560. Its totient is φ = 126264266496.

The previous prime is 320123143141. The next prime is 320123143237. The reversal of 320123143220 is 22341321023.

It is a congruent number.

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, 683816 + ... + 1052544.

It is an arithmetic number, because the mean of its divisors is an integer number (14201267220).

Almost surely, 2^320123143220 is an apocalyptic number.

It is an amenable number.

320123143220 is an abundant number, since it is smaller than the sum of its proper divisors (361537683340).

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

320123143220 is a wasteful number, since it uses less digits than its factorization.

320123143220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369344 (or 369342 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 320123143220 its reverse (22341321023), we get a palindrome (342464464243).

The spelling of 320123143220 in words is "three hundred twenty billion, one hundred twenty-three million, one hundred forty-three thousand, two hundred twenty".