243141317 has 2 divisors, whose sum is σ = 243141318. Its totient is φ = 243141316.

The previous prime is 243141287. The next prime is 243141331. The reversal of 243141317 is 713141342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238362721 + 4778596 = 15439^2 + 2186^2 .

It is a cyclic number.

It is not a de Polignac number, because 243141317 - 2⁶ = 243141253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243141377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121570658 + 121570659.

It is an arithmetic number, because the mean of its divisors is an integer number (121570659).

Almost surely, 2^243141317 is an apocalyptic number.

It is an amenable number.

243141317 is a deficient number, since it is larger than the sum of its proper divisors (1).

243141317 is an equidigital number, since it uses as much as digits as its factorization.

243141317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 243141317 is about 15592.9893541938. The cubic root of 243141317 is about 624.1460910479.

Adding to 243141317 its reverse (713141342), we get a palindrome (956282659).

The spelling of 243141317 in words is "two hundred forty-three million, one hundred forty-one thousand, three hundred seventeen".