243206343307 has 2 divisors, whose sum is σ = 243206343308. Its totient is φ = 243206343306.

The previous prime is 243206343269. The next prime is 243206343311. The reversal of 243206343307 is 703343602342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243206343307 is a prime.

It is not a weakly prime, because it can be changed into another prime (243206343337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121603171653 + 121603171654.

It is an arithmetic number, because the mean of its divisors is an integer number (121603171654).

Almost surely, 2^243206343307 is an apocalyptic number.

243206343307 is a deficient number, since it is larger than the sum of its proper divisors (1).

243206343307 is an equidigital number, since it uses as much as digits as its factorization.

243206343307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 37.

Adding to 243206343307 its reverse (703343602342), we get a palindrome (946549945649).

The spelling of 243206343307 in words is "two hundred forty-three billion, two hundred six million, three hundred forty-three thousand, three hundred seven".