2320321021 has 16 divisors (see below), whose sum is σ = 2461132800. Its totient is φ = 2181448368.

The previous prime is 2320320991. The next prime is 2320321039. The reversal of 2320321021 is 1201230232.

It is not a de Polignac number, because 2320321021 - 2²⁵ = 2286766589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2320320986 and 2320321004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2320321061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1774650 + ... + 1775956.

It is an arithmetic number, because the mean of its divisors is an integer number (153820800).

Almost surely, 2^2320321021 is an apocalyptic number.

It is an amenable number.

2320321021 is a deficient number, since it is larger than the sum of its proper divisors (140811779).

2320321021 is a wasteful number, since it uses less digits than its factorization.

2320321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2320321021 is about 48169.7106177731. The cubic root of 2320321021 is about 1323.8822463297.

Adding to 2320321021 its reverse (1201230232), we get a palindrome (3521551253).

The spelling of 2320321021 in words is "two billion, three hundred twenty million, three hundred twenty-one thousand, twenty-one".