243212231023 has 2 divisors, whose sum is σ = 243212231024. Its totient is φ = 243212231022.

The previous prime is 243212230979. The next prime is 243212231047. The reversal of 243212231023 is 320132212342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243212231023 - 2⁹ = 243212230511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243212231063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121606115511 + 121606115512.

It is an arithmetic number, because the mean of its divisors is an integer number (121606115512).

Almost surely, 2^243212231023 is an apocalyptic number.

243212231023 is a deficient number, since it is larger than the sum of its proper divisors (1).

243212231023 is an equidigital number, since it uses as much as digits as its factorization.

243212231023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 243212231023 its reverse (320132212342), we get a palindrome (563344443365).

The spelling of 243212231023 in words is "two hundred forty-three billion, two hundred twelve million, two hundred thirty-one thousand, twenty-three".