243010340491 has 2 divisors, whose sum is σ = 243010340492. Its totient is φ = 243010340490.

The previous prime is 243010340479. The next prime is 243010340497. The reversal of 243010340491 is 194043010342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243010340491 - 2¹¹ = 243010338443 is a prime.

It is not a weakly prime, because it can be changed into another prime (243010340497) 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, 121505170245 + 121505170246.

It is an arithmetic number, because the mean of its divisors is an integer number (121505170246).

Almost surely, 2^243010340491 is an apocalyptic number.

243010340491 is a deficient number, since it is larger than the sum of its proper divisors (1).

243010340491 is an equidigital number, since it uses as much as digits as its factorization.

243010340491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 243010340491 in words is "two hundred forty-three billion, ten million, three hundred forty thousand, four hundred ninety-one".