11315503 has 4 divisors (see below), whose sum is σ = 11322760. Its totient is φ = 11308248.

The previous prime is 11315501. The next prime is 11315509. The reversal of 11315503 is 30551311.

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 11315503 - 2¹ = 11315501 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 (11315501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225 + ... + 4762.

It is an arithmetic number, because the mean of its divisors is an integer number (2830690).

Almost surely, 2^11315503 is an apocalyptic number.

11315503 is a deficient number, since it is larger than the sum of its proper divisors (7257).

11315503 is an equidigital number, since it uses as much as digits as its factorization.

11315503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7256.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 11315503 is about 3363.8524046099. The cubic root of 11315503 is about 224.5042781711.

Adding to 11315503 its reverse (30551311), we get a palindrome (41866814).

The spelling of 11315503 in words is "eleven million, three hundred fifteen thousand, five hundred three".