203211223 has 4 divisors (see below), whose sum is σ = 204505720. Its totient is φ = 201916728.

The previous prime is 203211179. The next prime is 203211257. The reversal of 203211223 is 322112302.

203211223 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.

It is a cyclic number.

It is not a de Polignac number, because 203211223 - 2¹³ = 203203031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203211197 and 203211206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203215223) 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, 647013 + ... + 647326.

It is an arithmetic number, because the mean of its divisors is an integer number (51126430).

Almost surely, 2^203211223 is an apocalyptic number.

203211223 is a deficient number, since it is larger than the sum of its proper divisors (1294497).

203211223 is a wasteful number, since it uses less digits than its factorization.

203211223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294496.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 203211223 is about 14255.2173957467. The cubic root of 203211223 is about 587.9168351922.

Adding to 203211223 its reverse (322112302), we get a palindrome (525323525).

The spelling of 203211223 in words is "two hundred three million, two hundred eleven thousand, two hundred twenty-three".