240443213 has 2 divisors, whose sum is σ = 240443214. Its totient is φ = 240443212.

The previous prime is 240443197. The next prime is 240443221. The reversal of 240443213 is 312344042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211906249 + 28536964 = 14557^2 + 5342^2 .

It is a cyclic number.

It is not a de Polignac number, because 240443213 - 2⁴ = 240443197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240443243) 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, 120221606 + 120221607.

It is an arithmetic number, because the mean of its divisors is an integer number (120221607).

Almost surely, 2^240443213 is an apocalyptic number.

It is an amenable number.

240443213 is a deficient number, since it is larger than the sum of its proper divisors (1).

240443213 is an equidigital number, since it uses as much as digits as its factorization.

240443213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 240443213 is about 15506.2314248176. The cubic root of 240443213 is about 621.8288120137.

Adding to 240443213 its reverse (312344042), we get a palindrome (552787255).

The spelling of 240443213 in words is "two hundred forty million, four hundred forty-three thousand, two hundred thirteen".