13002003 has 18 divisors (see below), whose sum is σ = 21847644. Its totient is φ = 7429464.

The previous prime is 13001993. The next prime is 13002019. The reversal of 13002003 is 30020031.

It is a happy number.

It is not a de Polignac number, because 13002003 - 2¹⁰ = 13000979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (13002053) 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 17 ways as a sum of consecutive naturals, for example, 14301 + ... + 15182.

It is an arithmetic number, because the mean of its divisors is an integer number (1213758).

Almost surely, 2^13002003 is an apocalyptic number.

13002003 is a deficient number, since it is larger than the sum of its proper divisors (8845641).

13002003 is a wasteful number, since it uses less digits than its factorization.

13002003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29503 (or 29493 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 13002003 is about 3605.8290308887. The cubic root of 13002003 is about 235.1455443657.

Adding to 13002003 its reverse (30020031), we get a palindrome (43022034).

The spelling of 13002003 in words is "thirteen million, two thousand, three".