320203200020 has 24 divisors (see below), whose sum is σ = 733556422368. Its totient is φ = 116437527200.

The previous prime is 320203199989. The next prime is 320203200029. The reversal of 320203200020 is 20002302023.

It is a junction number, because it is equal to n+sod(n) for n = 320203199968 and 320203200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320203200029) 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, 727734326 + ... + 727734765.

It is an arithmetic number, because the mean of its divisors is an integer number (30564850932).

Almost surely, 2^320203200020 is an apocalyptic number.

It is an amenable number.

320203200020 is an abundant number, since it is smaller than the sum of its proper divisors (413353222348).

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

320203200020 is a wasteful number, since it uses less digits than its factorization.

320203200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455469111 (or 1455469109 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

Adding to 320203200020 its reverse (20002302023), we get a palindrome (340205502043).

The spelling of 320203200020 in words is "three hundred twenty billion, two hundred three million, two hundred thousand, twenty".