203230209 has 48 divisors (see below), whose sum is σ = 341763968. Its totient is φ = 104606208.

The previous prime is 203230199. The next prime is 203230211. The reversal of 203230209 is 902032302.

It is not a de Polignac number, because 203230209 - 2⁵ = 203230177 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203230309) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 602889 + ... + 603225.

Almost surely, 2^203230209 is an apocalyptic number.

It is an amenable number.

203230209 is a deficient number, since it is larger than the sum of its proper divisors (138533759).

203230209 is a wasteful number, since it uses less digits than its factorization.

203230209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 203230209 is about 14255.8833118120. The cubic root of 203230209 is about 587.9351442883.

The spelling of 203230209 in words is "two hundred three million, two hundred thirty thousand, two hundred nine".