243204312047 has 2 divisors, whose sum is σ = 243204312048. Its totient is φ = 243204312046.

The previous prime is 243204311899. The next prime is 243204312061. The reversal of 243204312047 is 740213402342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243204312047 - 2¹⁶ = 243204246511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243204312077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121602156023 + 121602156024.

It is an arithmetic number, because the mean of its divisors is an integer number (121602156024).

Almost surely, 2^243204312047 is an apocalyptic number.

243204312047 is a deficient number, since it is larger than the sum of its proper divisors (1).

243204312047 is an equidigital number, since it uses as much as digits as its factorization.

243204312047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 32.

Adding to 243204312047 its reverse (740213402342), we get a palindrome (983417714389).

The spelling of 243204312047 in words is "two hundred forty-three billion, two hundred four million, three hundred twelve thousand, forty-seven".