2003003 has 4 divisors (see below), whose sum is σ = 2067648. Its totient is φ = 1938360.

The previous prime is 2002997. The next prime is 2003009. The reversal of 2003003 is 3003002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3003002 = 2 ⋅1501501.

It is an interprime number because it is at equal distance from previous prime (2002997) and next prime (2003009).

It is a cyclic number.

It is not a de Polignac number, because 2003003 - 2⁶ = 2002939 is a prime.

It is a Duffinian number.

2003003 is a modest number, since divided by 3003 gives 2 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2003009) 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 3 ways as a sum of consecutive naturals, for example, 32276 + ... + 32337.

It is an arithmetic number, because the mean of its divisors is an integer number (516912).

2^2003003 is an apocalyptic number.

2003003 is a deficient number, since it is larger than the sum of its proper divisors (64645).

2003003 is an equidigital number, since it uses as much as digits as its factorization.

2003003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64644.

The product of its (nonzero) digits is 18, while the sum is 8.

The square root of 2003003 is about 1415.2748849605. The cubic root of 2003003 is about 126.0551325033.

Adding to 2003003 its reverse (3003002), we get a palindrome (5006005).

Subtracting 2003003 from its reverse (3003002), we obtain a palindrome (999999).

The spelling of 2003003 in words is "two million, three thousand, three".