211030203 has 16 divisors (see below), whose sum is σ = 289429280. Its totient is φ = 136670976.

The previous prime is 211030189. The next prime is 211030219. The reversal of 211030203 is 302030112.

It is a happy number.

It is not a de Polignac number, because 211030203 - 2⁹ = 211029691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211030243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102993 + ... + 105021.

It is an arithmetic number, because the mean of its divisors is an integer number (18089330).

Almost surely, 2^211030203 is an apocalyptic number.

211030203 is a deficient number, since it is larger than the sum of its proper divisors (78399077).

211030203 is a wasteful number, since it uses less digits than its factorization.

211030203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 211030203 is about 14526.8786392673. The cubic root of 211030203 is about 595.3625857695.

Adding to 211030203 its reverse (302030112), we get a palindrome (513060315).

Subtracting 211030203 from its reverse (302030112), we obtain a palindrome (90999909).

The spelling of 211030203 in words is "two hundred eleven million, thirty thousand, two hundred three".