243434140343 has 2 divisors, whose sum is σ = 243434140344. Its totient is φ = 243434140342.

The previous prime is 243434140297. The next prime is 243434140349. The reversal of 243434140343 is 343041434342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243434140343 - 2⁸ = 243434140087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243434140349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121717070171 + 121717070172.

It is an arithmetic number, because the mean of its divisors is an integer number (121717070172).

Almost surely, 2^243434140343 is an apocalyptic number.

243434140343 is a deficient number, since it is larger than the sum of its proper divisors (1).

243434140343 is an equidigital number, since it uses as much as digits as its factorization.

243434140343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 243434140343 its reverse (343041434342), we get a palindrome (586475574685).

The spelling of 243434140343 in words is "two hundred forty-three billion, four hundred thirty-four million, one hundred forty thousand, three hundred forty-three".