240234217 has 2 divisors, whose sum is σ = 240234218. Its totient is φ = 240234216.

The previous prime is 240234209. The next prime is 240234223. The reversal of 240234217 is 712432042.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145347136 + 94887081 = 12056^2 + 9741^2 .

It is a cyclic number.

It is not a de Polignac number, because 240234217 - 2³ = 240234209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 240234191 and 240234200.

It is not a weakly prime, because it can be changed into another prime (240234277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120117108 + 120117109.

It is an arithmetic number, because the mean of its divisors is an integer number (120117109).

Almost surely, 2^240234217 is an apocalyptic number.

It is an amenable number.

240234217 is a deficient number, since it is larger than the sum of its proper divisors (1).

240234217 is an equidigital number, since it uses as much as digits as its factorization.

240234217 is an evil number, because the sum of its binary digits is even.

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

The square root of 240234217 is about 15499.4908626058. The cubic root of 240234217 is about 621.6485928743.

Adding to 240234217 its reverse (712432042), we get a palindrome (952666259).

The spelling of 240234217 in words is "two hundred forty million, two hundred thirty-four thousand, two hundred seventeen".