243255323 has 2 divisors, whose sum is σ = 243255324. Its totient is φ = 243255322.

The previous prime is 243255317. The next prime is 243255361. The reversal of 243255323 is 323552342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243255323 - 2¹² = 243251227 is a prime.

It is not a weakly prime, because it can be changed into another prime (243255223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121627661 + 121627662.

It is an arithmetic number, because the mean of its divisors is an integer number (121627662).

Almost surely, 2^243255323 is an apocalyptic number.

243255323 is a deficient number, since it is larger than the sum of its proper divisors (1).

243255323 is an equidigital number, since it uses as much as digits as its factorization.

243255323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 29.

The square root of 243255323 is about 15596.6446070942. The cubic root of 243255323 is about 624.2436273031.

The spelling of 243255323 in words is "two hundred forty-three million, two hundred fifty-five thousand, three hundred twenty-three".