243023423 has 4 divisors (see below), whose sum is σ = 243164280. Its totient is φ = 242882568.

The previous prime is 243023399. The next prime is 243023447. The reversal of 243023423 is 324320342.

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

It is an interprime number because it is at equal distance from previous prime (243023399) and next prime (243023447).

It is a cyclic number.

It is not a de Polignac number, because 243023423 - 2¹⁰ = 243022399 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243023723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67808 + ... + 71301.

It is an arithmetic number, because the mean of its divisors is an integer number (60791070).

Almost surely, 2^243023423 is an apocalyptic number.

243023423 is a deficient number, since it is larger than the sum of its proper divisors (140857).

243023423 is a wasteful number, since it uses less digits than its factorization.

243023423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140856.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 243023423 is about 15589.2085430916. The cubic root of 243023423 is about 624.0451963962.

Adding to 243023423 its reverse (324320342), we get a palindrome (567343765).

The spelling of 243023423 in words is "two hundred forty-three million, twenty-three thousand, four hundred twenty-three".