243115222349 has 2 divisors, whose sum is σ = 243115222350. Its totient is φ = 243115222348.

The previous prime is 243115222333. The next prime is 243115222367. The reversal of 243115222349 is 943222511342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187213713124 + 55901509225 = 432682^2 + 236435^2 .

It is a cyclic number.

It is not a de Polignac number, because 243115222349 - 2⁴ = 243115222333 is a prime.

It is a super-2 number, since 2×243115222349² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243115225349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121557611174 + 121557611175.

It is an arithmetic number, because the mean of its divisors is an integer number (121557611175).

Almost surely, 2^243115222349 is an apocalyptic number.

It is an amenable number.

243115222349 is a deficient number, since it is larger than the sum of its proper divisors (1).

243115222349 is an equidigital number, since it uses as much as digits as its factorization.

243115222349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 38.

The spelling of 243115222349 in words is "two hundred forty-three billion, one hundred fifteen million, two hundred twenty-two thousand, three hundred forty-nine".