243345441323 has 2 divisors, whose sum is σ = 243345441324. Its totient is φ = 243345441322.

The previous prime is 243345441319. The next prime is 243345441389. The reversal of 243345441323 is 323144543342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243345441323 - 2² = 243345441319 is a prime.

It is not a weakly prime, because it can be changed into another prime (243345441923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121672720661 + 121672720662.

It is an arithmetic number, because the mean of its divisors is an integer number (121672720662).

Almost surely, 2^243345441323 is an apocalyptic number.

243345441323 is a deficient number, since it is larger than the sum of its proper divisors (1).

243345441323 is an equidigital number, since it uses as much as digits as its factorization.

243345441323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 38.

Adding to 243345441323 its reverse (323144543342), we get a palindrome (566489984665).

The spelling of 243345441323 in words is "two hundred forty-three billion, three hundred forty-five million, four hundred forty-one thousand, three hundred twenty-three".