2003003003320 has 128 divisors (see below), whose sum is σ = 5116455590400. Its totient is φ = 699036889600.

The previous prime is 2003003003297. The next prime is 2003003003321. The reversal of 2003003003320 is 233003003002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2003003003294 and 2003003003303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003003003321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1660935 + ... + 2600905.

It is an arithmetic number, because the mean of its divisors is an integer number (39972309300).

Almost surely, 2^{2003003003320} is an apocalyptic number.

2003003003320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2003003003320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2558227795200).

2003003003320 is an abundant number, since it is smaller than the sum of its proper divisors (3113452587080).

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

2003003003320 is a wasteful number, since it uses less digits than its factorization.

2003003003320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940189 (or 940185 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 16.

Adding to 2003003003320 its reverse (233003003002), we get a palindrome (2236006006322).

The spelling of 2003003003320 in words is "two trillion, three billion, three million, three thousand, three hundred twenty".