205343497 has 2 divisors, whose sum is σ = 205343498. Its totient is φ = 205343496.

The previous prime is 205343491. The next prime is 205343503. The reversal of 205343497 is 794343502.

It is a balanced prime because it is at equal distance from previous prime (205343491) and next prime (205343503).

It can be written as a sum of positive squares in only one way, i.e., 204947856 + 395641 = 14316^2 + 629^2 .

It is a cyclic number.

It is not a de Polignac number, because 205343497 - 2²³ = 196954889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (205343491) 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, 102671748 + 102671749.

It is an arithmetic number, because the mean of its divisors is an integer number (102671749).

Almost surely, 2^205343497 is an apocalyptic number.

It is an amenable number.

205343497 is a deficient number, since it is larger than the sum of its proper divisors (1).

205343497 is an equidigital number, since it uses as much as digits as its factorization.

205343497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 205343497 is about 14329.8114781737. The cubic root of 205343497 is about 589.9660011051.

Adding to 205343497 its reverse (794343502), we get a palindrome (999686999).

The spelling of 205343497 in words is "two hundred five million, three hundred forty-three thousand, four hundred ninety-seven".