234240217 has 2 divisors, whose sum is σ = 234240218. Its totient is φ = 234240216.

The previous prime is 234240203. The next prime is 234240233. The reversal of 234240217 is 712042432.

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., 213773641 + 20466576 = 14621^2 + 4524^2 .

It is a cyclic number.

It is not a de Polignac number, because 234240217 - 2¹⁹ = 233715929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 234240191 and 234240200.

It is not a weakly prime, because it can be changed into another prime (234240277) 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, 117120108 + 117120109.

It is an arithmetic number, because the mean of its divisors is an integer number (117120109).

Almost surely, 2^234240217 is an apocalyptic number.

It is an amenable number.

234240217 is a deficient number, since it is larger than the sum of its proper divisors (1).

234240217 is an equidigital number, since it uses as much as digits as its factorization.

234240217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 234240217 is about 15304.9082649979. The cubic root of 234240217 is about 616.4348080222.

Adding to 234240217 its reverse (712042432), we get a palindrome (946282649).

The spelling of 234240217 in words is "two hundred thirty-four million, two hundred forty thousand, two hundred seventeen".