243214423 has 2 divisors, whose sum is σ = 243214424. Its totient is φ = 243214422.

The previous prime is 243214373. The next prime is 243214429. The reversal of 243214423 is 324412342.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243214423 - 2¹³ = 243206231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243214429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121607211 + 121607212.

It is an arithmetic number, because the mean of its divisors is an integer number (121607212).

Almost surely, 2^243214423 is an apocalyptic number.

243214423 is a deficient number, since it is larger than the sum of its proper divisors (1).

243214423 is an equidigital number, since it uses as much as digits as its factorization.

243214423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 25.

The square root of 243214423 is about 15595.3333725188. Note that the first 4 decimals coincide. The cubic root of 243214423 is about 624.2086393803.

Adding to 243214423 its reverse (324412342), we get a palindrome (567626765).

The spelling of 243214423 in words is "two hundred forty-three million, two hundred fourteen thousand, four hundred twenty-three".