2002320321 has 16 divisors (see below), whose sum is σ = 2736296640. Its totient is φ = 1301646080.

The previous prime is 2002320311. The next prime is 2002320329. The reversal of 2002320321 is 1230232002.

It is a cyclic number.

It is not a de Polignac number, because 2002320321 - 2¹¹ = 2002318273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2002320321.

It is not an unprimeable number, because it can be changed into a prime (2002320329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362446 + ... + 367928.

It is an arithmetic number, because the mean of its divisors is an integer number (171018540).

Almost surely, 2^2002320321 is an apocalyptic number.

It is an amenable number.

2002320321 is a deficient number, since it is larger than the sum of its proper divisors (733976319).

2002320321 is a wasteful number, since it uses less digits than its factorization.

2002320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8496.

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

The square root of 2002320321 is about 44747.2940075710. The cubic root of 2002320321 is about 1260.4080984703.

Adding to 2002320321 its reverse (1230232002), we get a palindrome (3232552323).

The spelling of 2002320321 in words is "two billion, two million, three hundred twenty thousand, three hundred twenty-one".