243142211 has 16 divisors (see below), whose sum is σ = 277782624. Its totient is φ = 210829824.

The previous prime is 243142201. The next prime is 243142243. The reversal of 243142211 is 112241342.

It is a cyclic number.

It is not a de Polignac number, because 243142211 - 2¹⁰ = 243141187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243142201) 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, 199841 + ... + 201053.

It is an arithmetic number, because the mean of its divisors is an integer number (17361414).

Almost surely, 2^243142211 is an apocalyptic number.

243142211 is a deficient number, since it is larger than the sum of its proper divisors (34640413).

243142211 is a wasteful number, since it uses less digits than its factorization.

243142211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150.

The product of its digits is 384, while the sum is 20.

The square root of 243142211 is about 15593.0180208964. The cubic root of 243142211 is about 624.1468560158.

Adding to 243142211 its reverse (112241342), we get a palindrome (355383553).

The spelling of 243142211 in words is "two hundred forty-three million, one hundred forty-two thousand, two hundred eleven".