13011003 has 16 divisors (see below), whose sum is σ = 19456800. Its totient is φ = 8592480.

The previous prime is 13010993. The next prime is 13011007. The reversal of 13011003 is 30011031.

It is not a de Polignac number, because 13011003 - 2⁵ = 13010971 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 (13011007) 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 15 ways as a sum of consecutive naturals, for example, 733 + ... + 5153.

It is an arithmetic number, because the mean of its divisors is an integer number (1216050).

Almost surely, 2^13011003 is an apocalyptic number.

13011003 is a deficient number, since it is larger than the sum of its proper divisors (6445797).

13011003 is a wasteful number, since it uses less digits than its factorization.

13011003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539 (or 4533 counting only the distinct ones).

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

The square root of 13011003 is about 3607.0767943031. The cubic root of 13011003 is about 235.1997878486.

Adding to 13011003 its reverse (30011031), we get a palindrome (43022034).

It can be divided in two parts, 1301 and 1003, that added together give a square (2304 = 48²).

The spelling of 13011003 in words is "thirteen million, eleven thousand, three".