13505303 has 4 divisors (see below), whose sum is σ = 15434640. Its totient is φ = 11575968.

The previous prime is 13505299. The next prime is 13505321. The reversal of 13505303 is 30350531.

13505303 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13505303 - 2² = 13505299 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 (13505353) 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, 964658 + ... + 964671.

It is an arithmetic number, because the mean of its divisors is an integer number (3858660).

Almost surely, 2^13505303 is an apocalyptic number.

13505303 is a deficient number, since it is larger than the sum of its proper divisors (1929337).

13505303 is an equidigital number, since it uses as much as digits as its factorization.

13505303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929336.

The product of its (nonzero) digits is 675, while the sum is 20.

The square root of 13505303 is about 3674.9561902151. The cubic root of 13505303 is about 238.1413314463.

Adding to 13505303 its reverse (30350531), we get a palindrome (43855834).

The spelling of 13505303 in words is "thirteen million, five hundred five thousand, three hundred three".