205236133 has 2 divisors, whose sum is σ = 205236134. Its totient is φ = 205236132.

The previous prime is 205235993. The next prime is 205236139. The reversal of 205236133 is 331632502.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140707044 + 64529089 = 11862^2 + 8033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205236133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205236098 and 205236107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205236139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102618066 + 102618067.

It is an arithmetic number, because the mean of its divisors is an integer number (102618067).

Almost surely, 2^205236133 is an apocalyptic number.

It is an amenable number.

205236133 is a deficient number, since it is larger than the sum of its proper divisors (1).

205236133 is an equidigital number, since it uses as much as digits as its factorization.

205236133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 205236133 is about 14326.0648120829. The cubic root of 205236133 is about 589.8631617924.

Adding to 205236133 its reverse (331632502), we get a palindrome (536868635).

The spelling of 205236133 in words is "two hundred five million, two hundred thirty-six thousand, one hundred thirty-three".