113400203 has 4 divisors (see below), whose sum is σ = 129600240. Its totient is φ = 97200168.

The previous prime is 113400197. The next prime is 113400223. The reversal of 113400203 is 302004311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302004311 = 7 ⋅43143473.

It is a cyclic number.

It is not a de Polignac number, because 113400203 - 2²⁰ = 112351627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113400223) 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, 8100008 + ... + 8100021.

It is an arithmetic number, because the mean of its divisors is an integer number (32400060).

Almost surely, 2^113400203 is an apocalyptic number.

113400203 is a deficient number, since it is larger than the sum of its proper divisors (16200037).

113400203 is an equidigital number, since it uses as much as digits as its factorization.

113400203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16200036.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 113400203 is about 10648.9531410369. The cubic root of 113400203 is about 484.0288826308.

Adding to 113400203 its reverse (302004311), we get a palindrome (415404514).

The spelling of 113400203 in words is "one hundred thirteen million, four hundred thousand, two hundred three".