206342393 has 2 divisors, whose sum is σ = 206342394. Its totient is φ = 206342392.

The previous prime is 206342369. The next prime is 206342441. The reversal of 206342393 is 393243602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144672784 + 61669609 = 12028^2 + 7853^2 .

It is a cyclic number.

It is not a de Polignac number, because 206342393 - 2⁶ = 206342329 is a prime.

It is not a weakly prime, because it can be changed into another prime (206342363) 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, 103171196 + 103171197.

It is an arithmetic number, because the mean of its divisors is an integer number (103171197).

Almost surely, 2^206342393 is an apocalyptic number.

It is an amenable number.

206342393 is a deficient number, since it is larger than the sum of its proper divisors (1).

206342393 is an equidigital number, since it uses as much as digits as its factorization.

206342393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 206342393 is about 14364.6229675547. The cubic root of 206342393 is about 590.9210864217.

Adding to 206342393 its reverse (393243602), we get a palindrome (599585995).

The spelling of 206342393 in words is "two hundred six million, three hundred forty-two thousand, three hundred ninety-three".