209010223 has 8 divisors (see below), whose sum is σ = 230927328. Its totient is φ = 188162304.

The previous prime is 209010211. The next prime is 209010227. The reversal of 209010223 is 322010902.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 209010223 - 2²¹ = 206913071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 209010223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209010227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266886 + ... + 267667.

It is an arithmetic number, because the mean of its divisors is an integer number (28865916).

Almost surely, 2^209010223 is an apocalyptic number.

209010223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

209010223 is a deficient number, since it is larger than the sum of its proper divisors (21917105).

209010223 is a wasteful number, since it uses less digits than its factorization.

209010223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534593.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 209010223 is about 14457.1858603257. The cubic root of 209010223 is about 593.4568898166.

The spelling of 209010223 in words is "two hundred nine million, ten thousand, two hundred twenty-three".