205705103 has 2 divisors, whose sum is σ = 205705104. Its totient is φ = 205705102.

The previous prime is 205705067. The next prime is 205705109. The reversal of 205705103 is 301507502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205705103 - 2¹² = 205701007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205705109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102852551 + 102852552.

It is an arithmetic number, because the mean of its divisors is an integer number (102852552).

Almost surely, 2^205705103 is an apocalyptic number.

205705103 is a deficient number, since it is larger than the sum of its proper divisors (1).

205705103 is an equidigital number, since it uses as much as digits as its factorization.

205705103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 205705103 is about 14342.4231913579. The cubic root of 205705103 is about 590.3121043335.

The spelling of 205705103 in words is "two hundred five million, seven hundred five thousand, one hundred three".