206123203 has 16 divisors (see below), whose sum is σ = 243204192. Its totient is φ = 172224000.

The previous prime is 206123161. The next prime is 206123207. The reversal of 206123203 is 302321602.

It is not a de Polignac number, because 206123203 - 2²⁵ = 172568771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206123207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31473 + ... + 37453.

It is an arithmetic number, because the mean of its divisors is an integer number (15200262).

Almost surely, 2^206123203 is an apocalyptic number.

206123203 is a deficient number, since it is larger than the sum of its proper divisors (37080989).

206123203 is a wasteful number, since it uses less digits than its factorization.

206123203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6246.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 206123203 is about 14356.9914327480. The cubic root of 206123203 is about 590.7117743151.

Adding to 206123203 its reverse (302321602), we get a palindrome (508444805).

The spelling of 206123203 in words is "two hundred six million, one hundred twenty-three thousand, two hundred three".