13400203 has 4 divisors (see below), whose sum is σ = 13408408. Its totient is φ = 13392000.

The previous prime is 13400173. The next prime is 13400207. The reversal of 13400203 is 30200431.

13400203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 30200431 = 313 ⋅96487.

It is a cyclic number.

It is not a de Polignac number, because 13400203 - 2⁵ = 13400171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13400207) 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, 726 + ... + 5227.

It is an arithmetic number, because the mean of its divisors is an integer number (3352102).

Almost surely, 2^13400203 is an apocalyptic number.

13400203 is a deficient number, since it is larger than the sum of its proper divisors (8205).

13400203 is an equidigital number, since it uses as much as digits as its factorization.

13400203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8204.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 13400203 is about 3660.6287711266. The cubic root of 13400203 is about 237.5219732209.

Adding to 13400203 its reverse (30200431), we get a palindrome (43600634).

The spelling of 13400203 in words is "thirteen million, four hundred thousand, two hundred three".