205355023 has 2 divisors, whose sum is σ = 205355024. Its totient is φ = 205355022.

The previous prime is 205355009. The next prime is 205355027. The reversal of 205355023 is 320553502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205355023 - 2⁵ = 205354991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205355027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102677511 + 102677512.

It is an arithmetic number, because the mean of its divisors is an integer number (102677512).

Almost surely, 2^205355023 is an apocalyptic number.

205355023 is a deficient number, since it is larger than the sum of its proper divisors (1).

205355023 is an equidigital number, since it uses as much as digits as its factorization.

205355023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 205355023 is about 14330.2136411151. The cubic root of 205355023 is about 589.9770392290.

The spelling of 205355023 in words is "two hundred five million, three hundred fifty-five thousand, twenty-three".