243034313 has 2 divisors, whose sum is σ = 243034314. Its totient is φ = 243034312.

The previous prime is 243034303. The next prime is 243034331. The reversal of 243034313 is 313430342.

Together with next prime (243034331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210453049 + 32581264 = 14507^2 + 5708^2 .

It is a cyclic number.

It is not a de Polignac number, because 243034313 - 2⁶ = 243034249 is a prime.

It is not a weakly prime, because it can be changed into another prime (243034303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121517156 + 121517157.

It is an arithmetic number, because the mean of its divisors is an integer number (121517157).

Almost surely, 2^243034313 is an apocalyptic number.

It is an amenable number.

243034313 is a deficient number, since it is larger than the sum of its proper divisors (1).

243034313 is an equidigital number, since it uses as much as digits as its factorization.

243034313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 243034313 is about 15589.5578192584. The cubic root of 243034313 is about 624.0545175152.

Adding to 243034313 its reverse (313430342), we get a palindrome (556464655).

The spelling of 243034313 in words is "two hundred forty-three million, thirty-four thousand, three hundred thirteen".