2003321344 has 80 divisors (see below), whose sum is σ = 4422895488. Its totient is φ = 901660672.

The previous prime is 2003321323. The next prime is 2003321347. The reversal of 2003321344 is 4431233002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003321347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195189 + ... + 205195.

Almost surely, 2^2003321344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2003321344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2211447744).

2003321344 is an abundant number, since it is smaller than the sum of its proper divisors (2419574144).

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

2003321344 is a wasteful number, since it uses less digits than its factorization.

2003321344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065 (or 10049 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 2003321344 is about 44758.4779008402. The cubic root of 2003321344 is about 1260.6181027150.

Adding to 2003321344 its reverse (4431233002), we get a palindrome (6434554346).

The spelling of 2003321344 in words is "two billion, three million, three hundred twenty-one thousand, three hundred forty-four".