243414404309 has 2 divisors, whose sum is σ = 243414404310. Its totient is φ = 243414404308.

The previous prime is 243414404297. The next prime is 243414404351. The reversal of 243414404309 is 903404414342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243125914084 + 288490225 = 493078^2 + 16985^2 .

It is a cyclic number.

It is not a de Polignac number, because 243414404309 - 2¹² = 243414400213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243414404399) 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, 121707202154 + 121707202155.

It is an arithmetic number, because the mean of its divisors is an integer number (121707202155).

Almost surely, 2^243414404309 is an apocalyptic number.

It is an amenable number.

243414404309 is a deficient number, since it is larger than the sum of its proper divisors (1).

243414404309 is an equidigital number, since it uses as much as digits as its factorization.

243414404309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 243414404309 in words is "two hundred forty-three billion, four hundred fourteen million, four hundred four thousand, three hundred nine".