243344329 has 2 divisors, whose sum is σ = 243344330. Its totient is φ = 243344328.

The previous prime is 243344323. The next prime is 243344351. The reversal of 243344329 is 923443342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235929600 + 7414729 = 15360^2 + 2723^2 .

It is a cyclic number.

It is not a de Polignac number, because 243344329 - 2¹⁵ = 243311561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243344294 and 243344303.

It is not a weakly prime, because it can be changed into another prime (243344323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121672164 + 121672165.

It is an arithmetic number, because the mean of its divisors is an integer number (121672165).

Almost surely, 2^243344329 is an apocalyptic number.

It is an amenable number.

243344329 is a deficient number, since it is larger than the sum of its proper divisors (1).

243344329 is an equidigital number, since it uses as much as digits as its factorization.

243344329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 34.

The square root of 243344329 is about 15599.4977162728. The cubic root of 243344329 is about 624.3197539732.

The spelling of 243344329 in words is "two hundred forty-three million, three hundred forty-four thousand, three hundred twenty-nine".