243234424313 has 2 divisors, whose sum is σ = 243234424314. Its totient is φ = 243234424312.

The previous prime is 243234424309. The next prime is 243234424337. The reversal of 243234424313 is 313424432342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231363886009 + 11870538304 = 481003^2 + 108952^2 .

It is a cyclic number.

It is not a de Polignac number, because 243234424313 - 2² = 243234424309 is a prime.

It is not a weakly prime, because it can be changed into another prime (243234424513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121617212156 + 121617212157.

It is an arithmetic number, because the mean of its divisors is an integer number (121617212157).

Almost surely, 2^243234424313 is an apocalyptic number.

It is an amenable number.

243234424313 is a deficient number, since it is larger than the sum of its proper divisors (1).

243234424313 is an equidigital number, since it uses as much as digits as its factorization.

243234424313 is an odious number, because the sum of its binary digits is odd.

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

Adding to 243234424313 its reverse (313424432342), we get a palindrome (556658856655).

The spelling of 243234424313 in words is "two hundred forty-three billion, two hundred thirty-four million, four hundred twenty-four thousand, three hundred thirteen".