2003321213 has 8 divisors (see below), whose sum is σ = 2063528376. Its totient is φ = 1943654400.

The previous prime is 2003321209. The next prime is 2003321219. The reversal of 2003321213 is 3121233002.

It can be written as a sum of positive squares in 4 ways, for example, as 53392249 + 1949928964 = 7307^2 + 44158^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2003321213 - 2² = 2003321209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2003321191 and 2003321200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003321219) 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 7 ways as a sum of consecutive naturals, for example, 127556 + ... + 142397.

It is an arithmetic number, because the mean of its divisors is an integer number (257941047).

Almost surely, 2^2003321213 is an apocalyptic number.

It is an amenable number.

2003321213 is a deficient number, since it is larger than the sum of its proper divisors (60207163).

2003321213 is a wasteful number, since it uses less digits than its factorization.

2003321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270175.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2003321213 is about 44758.4764374303. The cubic root of 2003321213 is about 1260.6180752372.

Adding to 2003321213 its reverse (3121233002), we get a palindrome (5124554215).

The spelling of 2003321213 in words is "two billion, three million, three hundred twenty-one thousand, two hundred thirteen".