206144347 has 2 divisors, whose sum is σ = 206144348. Its totient is φ = 206144346.

The previous prime is 206144321. The next prime is 206144369. The reversal of 206144347 is 743441602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206144347 - 2²³ = 197755739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206144387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103072173 + 103072174.

It is an arithmetic number, because the mean of its divisors is an integer number (103072174).

Almost surely, 2^206144347 is an apocalyptic number.

206144347 is a deficient number, since it is larger than the sum of its proper divisors (1).

206144347 is an equidigital number, since it uses as much as digits as its factorization.

206144347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 206144347 is about 14357.7277798404. The cubic root of 206144347 is about 590.7319719162.

Adding to 206144347 its reverse (743441602), we get a palindrome (949585949).

The spelling of 206144347 in words is "two hundred six million, one hundred forty-four thousand, three hundred forty-seven".