242213317 has 2 divisors, whose sum is σ = 242213318. Its totient is φ = 242213316.

The previous prime is 242213303. The next prime is 242213347. The reversal of 242213317 is 713312242.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183629601 + 58583716 = 13551^2 + 7654^2 .

It is a cyclic number.

It is not a de Polignac number, because 242213317 - 2⁷ = 242213189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242213291 and 242213300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242213347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121106658 + 121106659.

It is an arithmetic number, because the mean of its divisors is an integer number (121106659).

Almost surely, 2^242213317 is an apocalyptic number.

It is an amenable number.

242213317 is a deficient number, since it is larger than the sum of its proper divisors (1).

242213317 is an equidigital number, since it uses as much as digits as its factorization.

242213317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 25.

The square root of 242213317 is about 15563.2039439185. The cubic root of 242213317 is about 623.3510170345.

Adding to 242213317 its reverse (713312242), we get a palindrome (955525559).

The spelling of 242213317 in words is "two hundred forty-two million, two hundred thirteen thousand, three hundred seventeen".