13340403 has 16 divisors (see below), whose sum is σ = 20044800. Its totient is φ = 8767080.

The previous prime is 13340357. The next prime is 13340407. The reversal of 13340403 is 30404331.

It is not a de Polignac number, because 13340403 - 2⁹ = 13339891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13340407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1563 + ... + 5396.

It is an arithmetic number, because the mean of its divisors is an integer number (1252800).

Almost surely, 2^13340403 is an apocalyptic number.

13340403 is a deficient number, since it is larger than the sum of its proper divisors (6704397).

13340403 is an equidigital number, since it uses as much as digits as its factorization.

13340403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7039 (or 7033 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 13340403 is about 3652.4516423904. The cubic root of 13340403 is about 237.1681229776.

Adding to 13340403 its reverse (30404331), we get a palindrome (43744734).

The spelling of 13340403 in words is "thirteen million, three hundred forty thousand, four hundred three".