243212023 has 2 divisors, whose sum is σ = 243212024. Its totient is φ = 243212022.

The previous prime is 243212017. The next prime is 243212083. The reversal of 243212023 is 320212342.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243212023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243212003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121606011 + 121606012.

It is an arithmetic number, because the mean of its divisors is an integer number (121606012).

Almost surely, 2^243212023 is an apocalyptic number.

243212023 is a deficient number, since it is larger than the sum of its proper divisors (1).

243212023 is an equidigital number, since it uses as much as digits as its factorization.

243212023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 243212023 is about 15595.2564262342. The cubic root of 243212023 is about 624.2065861774.

Adding to 243212023 its reverse (320212342), we get a palindrome (563424365).

The spelling of 243212023 in words is "two hundred forty-three million, two hundred twelve thousand, twenty-three".