320220311420 has 24 divisors (see below), whose sum is σ = 672794491824. Its totient is φ = 128024917376.

The previous prime is 320220311363. The next prime is 320220311423. The reversal of 320220311420 is 24113022023.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 320220311392 and 320220311401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320220311423) 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, 3908897 + ... + 3989976.

It is an arithmetic number, because the mean of its divisors is an integer number (28033103826).

Almost surely, 2^320220311420 is an apocalyptic number.

It is an amenable number.

320220311420 is an abundant number, since it is smaller than the sum of its proper divisors (352574180404).

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

320220311420 is a wasteful number, since it uses less digits than its factorization.

320220311420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7900909 (or 7900907 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 320220311420 its reverse (24113022023), we get a palindrome (344333333443).

The spelling of 320220311420 in words is "three hundred twenty billion, two hundred twenty million, three hundred eleven thousand, four hundred twenty".