211303223203 has 4 divisors (see below), whose sum is σ = 220490319888. Its totient is φ = 202116126520.

The previous prime is 211303223177. The next prime is 211303223227. The reversal of 211303223203 is 302322303112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211303223203 - 2¹⁷ = 211303092131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211303283203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4593548308 + ... + 4593548353.

It is an arithmetic number, because the mean of its divisors is an integer number (55122579972).

Almost surely, 2^211303223203 is an apocalyptic number.

211303223203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

211303223203 is a deficient number, since it is larger than the sum of its proper divisors (9187096685).

211303223203 is an equidigital number, since it uses as much as digits as its factorization.

211303223203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9187096684.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 211303223203 its reverse (302322303112), we get a palindrome (513625526315).

The spelling of 211303223203 in words is "two hundred eleven billion, three hundred three million, two hundred twenty-three thousand, two hundred three".