243344309323 has 2 divisors, whose sum is σ = 243344309324. Its totient is φ = 243344309322.

The previous prime is 243344309317. The next prime is 243344309357. The reversal of 243344309323 is 323903443342.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243344309323 is a prime.

It is not a weakly prime, because it can be changed into another prime (243344300323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121672154661 + 121672154662.

It is an arithmetic number, because the mean of its divisors is an integer number (121672154662).

Almost surely, 2^243344309323 is an apocalyptic number.

243344309323 is a deficient number, since it is larger than the sum of its proper divisors (1).

243344309323 is an equidigital number, since it uses as much as digits as its factorization.

243344309323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 40.

The spelling of 243344309323 in words is "two hundred forty-three billion, three hundred forty-four million, three hundred nine thousand, three hundred twenty-three".