12013003 has 4 divisors (see below), whose sum is σ = 12020008. Its totient is φ = 12006000.

The previous prime is 12012971. The next prime is 12013009. The reversal of 12013003 is 30031021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12013003 - 2⁵ = 12012971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12013009) 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, 1000 + ... + 5002.

It is an arithmetic number, because the mean of its divisors is an integer number (3005002).

Almost surely, 2^12013003 is an apocalyptic number.

12013003 is a deficient number, since it is larger than the sum of its proper divisors (7005).

12013003 is an equidigital number, since it uses as much as digits as its factorization.

12013003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7004.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 12013003 is about 3465.9779283775. The cubic root of 12013003 is about 229.0255115454.

Adding to 12013003 its reverse (30031021), we get a palindrome (42044024).

The spelling of 12013003 in words is "twelve million, thirteen thousand, three".