13812003 has 6 divisors (see below), whose sum is σ = 19950684. Its totient is φ = 9207996.

The previous prime is 13811977. The next prime is 13812011. The reversal of 13812003 is 30021831.

It is not a de Polignac number, because 13812003 - 2¹² = 13807907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13812023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 767325 + ... + 767342.

It is an arithmetic number, because the mean of its divisors is an integer number (3325114).

Almost surely, 2^13812003 is an apocalyptic number.

13812003 is a deficient number, since it is larger than the sum of its proper divisors (6138681).

13812003 is a wasteful number, since it uses less digits than its factorization.

13812003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534673 (or 1534670 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 13812003 is about 3716.4503225524. The cubic root of 13812003 is about 239.9305528231.

Adding to 13812003 its reverse (30021831), we get a palindrome (43833834).

The spelling of 13812003 in words is "thirteen million, eight hundred twelve thousand, three".