2020320321 has 4 divisors (see below), whose sum is σ = 2693760432. Its totient is φ = 1346880212.

The previous prime is 2020320319. The next prime is 2020320329. The reversal of 2020320321 is 1230230202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2020320321 - 2¹ = 2020320319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2020320321.

It is not an unprimeable number, because it can be changed into a prime (2020320329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336720051 + ... + 336720056.

It is an arithmetic number, because the mean of its divisors is an integer number (673440108).

Almost surely, 2^2020320321 is an apocalyptic number.

It is an amenable number.

2020320321 is a deficient number, since it is larger than the sum of its proper divisors (673440111).

2020320321 is an equidigital number, since it uses as much as digits as its factorization.

2020320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673440110.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2020320321 is about 44947.9734915825. The cubic root of 2020320321 is about 1264.1736798094.

Adding to 2020320321 its reverse (1230230202), we get a palindrome (3250550523).

The spelling of 2020320321 in words is "two billion, twenty million, three hundred twenty thousand, three hundred twenty-one".