243422351 has 2 divisors, whose sum is σ = 243422352. Its totient is φ = 243422350.

The previous prime is 243422339. The next prime is 243422359. The reversal of 243422351 is 153224342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243422351 - 2¹⁸ = 243160207 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243422351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243422359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121711175 + 121711176.

It is an arithmetic number, because the mean of its divisors is an integer number (121711176).

Almost surely, 2^243422351 is an apocalyptic number.

243422351 is a deficient number, since it is larger than the sum of its proper divisors (1).

243422351 is an equidigital number, since it uses as much as digits as its factorization.

243422351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 26.

The square root of 243422351 is about 15601.9983014997. The cubic root of 243422351 is about 624.3864707814.

Adding to 243422351 its reverse (153224342), we get a palindrome (396646693).

The spelling of 243422351 in words is "two hundred forty-three million, four hundred twenty-two thousand, three hundred fifty-one".