206340243 has 16 divisors (see below), whose sum is σ = 278848416. Its totient is φ = 135705600.

The previous prime is 206340227. The next prime is 206340263. The reversal of 206340243 is 342043602.

It is a happy number.

It is not a de Polignac number, because 206340243 - 2⁴ = 206340227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206340223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107593 + ... + 109493.

It is an arithmetic number, because the mean of its divisors is an integer number (17428026).

Almost surely, 2^206340243 is an apocalyptic number.

206340243 is a deficient number, since it is larger than the sum of its proper divisors (72508173).

206340243 is a wasteful number, since it uses less digits than its factorization.

206340243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 206340243 is about 14364.5481307280. The cubic root of 206340243 is about 590.9190340324.

Adding to 206340243 its reverse (342043602), we get a palindrome (548383845).

The spelling of 206340243 in words is "two hundred six million, three hundred forty thousand, two hundred forty-three".