113203 has 4 divisors (see below), whose sum is σ = 119880. Its totient is φ = 106528.

The previous prime is 113189. The next prime is 113209. The reversal of 113203 is 302311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302311 = 17 ⋅17783.

It is a cyclic number.

It is not a de Polignac number, because 113203 - 2⁵ = 113171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113203.

It is not an unprimeable number, because it can be changed into a prime (113209) 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, 3313 + ... + 3346.

It is an arithmetic number, because the mean of its divisors is an integer number (29970).

2¹¹³²⁰³ is an apocalyptic number.

113203 is a deficient number, since it is larger than the sum of its proper divisors (6677).

113203 is an equidigital number, since it uses as much as digits as its factorization.

113203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6676.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 113203 is about 336.4565350829. The cubic root of 113203 is about 48.3748144357.

Adding to 113203 its reverse (302311), we get a palindrome (415514).

The spelling of 113203 in words is "one hundred thirteen thousand, two hundred three".