235224217 has 2 divisors, whose sum is σ = 235224218. Its totient is φ = 235224216.

The previous prime is 235224179. The next prime is 235224239. The reversal of 235224217 is 712422532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144384256 + 90839961 = 12016^2 + 9531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-235224217 is a prime.

It is not a weakly prime, because it can be changed into another prime (235224247) 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, 117612108 + 117612109.

It is an arithmetic number, because the mean of its divisors is an integer number (117612109).

Almost surely, 2^235224217 is an apocalyptic number.

It is an amenable number.

235224217 is a deficient number, since it is larger than the sum of its proper divisors (1).

235224217 is an equidigital number, since it uses as much as digits as its factorization.

235224217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 28.

The square root of 235224217 is about 15337.0211253685. The cubic root of 235224217 is about 617.2967785099.

Adding to 235224217 its reverse (712422532), we get a palindrome (947646749).

It can be divided in two parts, 2352 and 24217, that added together give a square (26569 = 163²).

The spelling of 235224217 in words is "two hundred thirty-five million, two hundred twenty-four thousand, two hundred seventeen".