205011623 has 2 divisors, whose sum is σ = 205011624. Its totient is φ = 205011622.

The previous prime is 205011601. The next prime is 205011629. The reversal of 205011623 is 326110502.

205011623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205011623 - 2¹⁴ = 204995239 is a prime.

It is equal to p_11341073 and since 205011623 and 11341073 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 205011595 and 205011604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205011629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102505811 + 102505812.

It is an arithmetic number, because the mean of its divisors is an integer number (102505812).

Almost surely, 2^205011623 is an apocalyptic number.

205011623 is a deficient number, since it is larger than the sum of its proper divisors (1).

205011623 is an equidigital number, since it uses as much as digits as its factorization.

205011623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 205011623 is about 14318.2269502896. The cubic root of 205011623 is about 589.6479974436.

The spelling of 205011623 in words is "two hundred five million, eleven thousand, six hundred twenty-three".