209230203 has 32 divisors (see below), whose sum is σ = 363557376. Its totient is φ = 103868928.

The previous prime is 209230199. The next prime is 209230249. The reversal of 209230203 is 302032902.

It is not a de Polignac number, because 209230203 - 2² = 209230199 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 209230203.

It is not an unprimeable number, because it can be changed into a prime (209230283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17901 + ... + 27182.

It is an arithmetic number, because the mean of its divisors is an integer number (11361168).

Almost surely, 2^209230203 is an apocalyptic number.

209230203 is a deficient number, since it is larger than the sum of its proper divisors (154327173).

209230203 is a wasteful number, since it uses less digits than its factorization.

209230203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45123.

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

The square root of 209230203 is about 14464.7918408804. The cubic root of 209230203 is about 593.6650181901.

The spelling of 209230203 in words is "two hundred nine million, two hundred thirty thousand, two hundred three".