20003321303 has 16 divisors (see below), whose sum is σ = 24699700800. Its totient is φ = 16137128448.

The previous prime is 20003321297. The next prime is 20003321311. The reversal of 20003321303 is 30312330002.

It is not a de Polignac number, because 20003321303 - 2⁴ = 20003321287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003321383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1709426 + ... + 1721087.

It is an arithmetic number, because the mean of its divisors is an integer number (1543731300).

Almost surely, 2^20003321303 is an apocalyptic number.

20003321303 is a deficient number, since it is larger than the sum of its proper divisors (4696379497).

20003321303 is an equidigital number, since it uses as much as digits as its factorization.

20003321303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430551 (or 3430537 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 20003321303 its reverse (30312330002), we get a palindrome (50315651305).

The spelling of 20003321303 in words is "twenty billion, three million, three hundred twenty-one thousand, three hundred three".