113503603 has 4 divisors (see below), whose sum is σ = 113526280. Its totient is φ = 113480928.

The previous prime is 113503601. The next prime is 113503609. The reversal of 113503603 is 306305311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 306305311 = 13 ⋅23561947.

It is a cyclic number.

It is not a de Polignac number, because 113503603 - 2¹ = 113503601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113503601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150 + ... + 15067.

It is an arithmetic number, because the mean of its divisors is an integer number (28381570).

Almost surely, 2^113503603 is an apocalyptic number.

113503603 is a deficient number, since it is larger than the sum of its proper divisors (22677).

113503603 is an equidigital number, since it uses as much as digits as its factorization.

113503603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22676.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 113503603 is about 10653.8069721579. The cubic root of 113503603 is about 484.1759528628.

Adding to 113503603 its reverse (306305311), we get a palindrome (419808914).

The spelling of 113503603 in words is "one hundred thirteen million, five hundred three thousand, six hundred three".