243422717 has 2 divisors, whose sum is σ = 243422718. Its totient is φ = 243422716.

The previous prime is 243422701. The next prime is 243422749. The reversal of 243422717 is 717224342.

It is an a-pointer prime, because the next prime (243422749) can be obtained adding 243422717 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194156356 + 49266361 = 13934^2 + 7019^2 .

It is a cyclic number.

It is not a de Polignac number, because 243422717 - 2⁴ = 243422701 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243425717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121711358 + 121711359.

It is an arithmetic number, because the mean of its divisors is an integer number (121711359).

Almost surely, 2^243422717 is an apocalyptic number.

It is an amenable number.

243422717 is a deficient number, since it is larger than the sum of its proper divisors (1).

243422717 is an equidigital number, since it uses as much as digits as its factorization.

243422717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 32.

The square root of 243422717 is about 15602.0100307621. The cubic root of 243422717 is about 624.3867837154.

The spelling of 243422717 in words is "two hundred forty-three million, four hundred twenty-two thousand, seven hundred seventeen".