206512043 has 2 divisors, whose sum is σ = 206512044. Its totient is φ = 206512042.

The previous prime is 206511961. The next prime is 206512057. The reversal of 206512043 is 340215602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206512043 is a prime.

It is not a weakly prime, because it can be changed into another prime (206512543) 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, 103256021 + 103256022.

It is an arithmetic number, because the mean of its divisors is an integer number (103256022).

Almost surely, 2^206512043 is an apocalyptic number.

206512043 is a deficient number, since it is larger than the sum of its proper divisors (1).

206512043 is an equidigital number, since it uses as much as digits as its factorization.

206512043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 206512043 is about 14370.5268866524. The cubic root of 206512043 is about 591.0829893299.

Adding to 206512043 its reverse (340215602), we get a palindrome (546727645).

The spelling of 206512043 in words is "two hundred six million, five hundred twelve thousand, forty-three".