13003003 has 4 divisors (see below), whose sum is σ = 14003248. Its totient is φ = 12002760.

The previous prime is 13002971. The next prime is 13003007. The reversal of 13003003 is 30030031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13003003 - 2⁵ = 13002971 is a prime.

It is a Duffinian number.

13003003 is a modest number, since divided by 3003 gives 13 as remainder.

It is not an unprimeable number, because it can be changed into a prime (13003007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500103 + ... + 500128.

It is an arithmetic number, because the mean of its divisors is an integer number (3500812).

Almost surely, 2^13003003 is an apocalyptic number.

13003003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13003003 is a deficient number, since it is larger than the sum of its proper divisors (1000245).

13003003 is a wasteful number, since it uses less digits than its factorization.

13003003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000244.

The product of its (nonzero) digits is 27, while the sum is 10.

The square root of 13003003 is about 3605.9676925896. The cubic root of 13003003 is about 235.1515726552.

Adding to 13003003 its reverse (30030031), we get a palindrome (43033034).

The spelling of 13003003 in words is "thirteen million, three thousand, three".