243000211 has 4 divisors (see below), whose sum is σ = 243393400. Its totient is φ = 242607024.

The previous prime is 243000209. The next prime is 243000239. The reversal of 243000211 is 112000342.

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 243000211 - 2¹ = 243000209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243000191 and 243000200.

It is not an unprimeable number, because it can be changed into a prime (243000311) 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, 195666 + ... + 196903.

It is an arithmetic number, because the mean of its divisors is an integer number (60848350).

Almost surely, 2^243000211 is an apocalyptic number.

243000211 is a deficient number, since it is larger than the sum of its proper divisors (393189).

243000211 is an equidigital number, since it uses as much as digits as its factorization.

243000211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393188.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 243000211 is about 15588.4640359466. The cubic root of 243000211 is about 624.0253275319.

Adding to 243000211 its reverse (112000342), we get a palindrome (355000553).

The spelling of 243000211 in words is "two hundred forty-three million, two hundred eleven", and thus it is an aban number.