113810403 has 16 divisors (see below), whose sum is σ = 174078720. Its totient is φ = 64789536.

The previous prime is 113810387. The next prime is 113810429. The reversal of 113810403 is 304018311.

It is not a de Polignac number, because 113810403 - 2⁴ = 113810387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 113810403.

It is not an unprimeable number, because it can be changed into a prime (113810303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4425 + ... + 15722.

It is an arithmetic number, because the mean of its divisors is an integer number (10879920).

Almost surely, 2^113810403 is an apocalyptic number.

113810403 is a deficient number, since it is larger than the sum of its proper divisors (60268317).

113810403 is a wasteful number, since it uses less digits than its factorization.

113810403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20426.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 113810403 is about 10668.1958643437. The cubic root of 113810403 is about 484.6118025919.

Adding to 113810403 its reverse (304018311), we get a palindrome (417828714).

The spelling of 113810403 in words is "one hundred thirteen million, eight hundred ten thousand, four hundred three".