243094913 has 2 divisors, whose sum is σ = 243094914. Its totient is φ = 243094912.

The previous prime is 243094879. The next prime is 243094919. The reversal of 243094913 is 319490342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195664144 + 47430769 = 13988^2 + 6887^2 .

It is a cyclic number.

It is not a de Polignac number, because 243094913 - 2¹² = 243090817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (243094919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121547456 + 121547457.

It is an arithmetic number, because the mean of its divisors is an integer number (121547457).

Almost surely, 2^243094913 is an apocalyptic number.

It is an amenable number.

243094913 is a deficient number, since it is larger than the sum of its proper divisors (1).

243094913 is an equidigital number, since it uses as much as digits as its factorization.

243094913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 243094913 is about 15591.5013068017. The cubic root of 243094913 is about 624.1063820173.

The spelling of 243094913 in words is "two hundred forty-three million, ninety-four thousand, nine hundred thirteen".