206103311 has 2 divisors, whose sum is σ = 206103312. Its totient is φ = 206103310.

The previous prime is 206103307. The next prime is 206103353. The reversal of 206103311 is 113301602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206103311 - 2² = 206103307 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206103311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206103011) 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, 103051655 + 103051656.

It is an arithmetic number, because the mean of its divisors is an integer number (103051656).

Almost surely, 2^206103311 is an apocalyptic number.

206103311 is a deficient number, since it is larger than the sum of its proper divisors (1).

206103311 is an equidigital number, since it uses as much as digits as its factorization.

206103311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 206103311 is about 14356.2986525079. The cubic root of 206103311 is about 590.6927714138.

Adding to 206103311 its reverse (113301602), we get a palindrome (319404913).

The spelling of 206103311 in words is "two hundred six million, one hundred three thousand, three hundred eleven".