13040303 has 4 divisors (see below), whose sum is σ = 13047528. Its totient is φ = 13033080.

The previous prime is 13040297. The next prime is 13040323. The reversal of 13040303 is 30304031.

It is a happy number.

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 13040303 - 2¹⁴ = 13023919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13040323) 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, 1688 + ... + 5378.

It is an arithmetic number, because the mean of its divisors is an integer number (3261882).

Almost surely, 2^13040303 is an apocalyptic number.

13040303 is a deficient number, since it is larger than the sum of its proper divisors (7225).

13040303 is an equidigital number, since it uses as much as digits as its factorization.

13040303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 13040303 is about 3611.1359708546. The cubic root of 13040303 is about 235.3762074343.

Adding to 13040303 its reverse (30304031), we get a palindrome (43344334).

The spelling of 13040303 in words is "thirteen million, forty thousand, three hundred three".