113403 has 8 divisors (see below), whose sum is σ = 153088. Its totient is φ = 74664.

The previous prime is 113383. The next prime is 113417. The reversal of 113403 is 304311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113403 - 2⁵ = 113371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113453) 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 7 ways as a sum of consecutive naturals, for example, 126 + ... + 492.

It is an arithmetic number, because the mean of its divisors is an integer number (19136).

2¹¹³⁴⁰³ is an apocalyptic number.

113403 is a deficient number, since it is larger than the sum of its proper divisors (39685).

113403 is a wasteful number, since it uses less digits than its factorization.

113403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 113403 is about 336.7536191342. The cubic root of 113403 is about 48.4032862099.

Adding to 113403 its reverse (304311), we get a palindrome (417714).

The spelling of 113403 in words is "one hundred thirteen thousand, four hundred three".