13115203 has 4 divisors (see below), whose sum is σ = 13435128. Its totient is φ = 12795280.

The previous prime is 13115197. The next prime is 13115227. The reversal of 13115203 is 30251131.

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

It is not a de Polignac number, because 13115203 - 2⁵ = 13115171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13115233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159901 + ... + 159982.

It is an arithmetic number, because the mean of its divisors is an integer number (3358782).

Almost surely, 2^13115203 is an apocalyptic number.

13115203 is a deficient number, since it is larger than the sum of its proper divisors (319925).

13115203 is an equidigital number, since it uses as much as digits as its factorization.

13115203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319924.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 13115203 is about 3621.4918196787. The cubic root of 13115203 is about 235.8259932982.

Adding to 13115203 its reverse (30251131), we get a palindrome (43366334).

The spelling of 13115203 in words is "thirteen million, one hundred fifteen thousand, two hundred three".