206430243 has 8 divisors (see below), whose sum is σ = 275321856. Its totient is φ = 137579400.

The previous prime is 206430233. The next prime is 206430247. The reversal of 206430243 is 342034602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206430243 - 2⁴ = 206430227 is a prime.

It is a super-2 number, since 2×206430243² = 85226890450078098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206430247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4758 + ... + 20868.

It is an arithmetic number, because the mean of its divisors is an integer number (34415232).

Almost surely, 2^206430243 is an apocalyptic number.

206430243 is a deficient number, since it is larger than the sum of its proper divisors (68891613).

206430243 is a wasteful number, since it uses less digits than its factorization.

206430243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20385.

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

The square root of 206430243 is about 14367.6805017372. The cubic root of 206430243 is about 591.0049358127.

Adding to 206430243 its reverse (342034602), we get a palindrome (548464845).

The spelling of 206430243 in words is "two hundred six million, four hundred thirty thousand, two hundred forty-three".