205134011 has 2 divisors, whose sum is σ = 205134012. Its totient is φ = 205134010.

The previous prime is 205134001. The next prime is 205134067. The reversal of 205134011 is 110431502.

205134011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205134011 - 2¹⁸ = 204871867 is a prime.

It is not a weakly prime, because it can be changed into another prime (205134001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102567005 + 102567006.

It is an arithmetic number, because the mean of its divisors is an integer number (102567006).

Almost surely, 2^205134011 is an apocalyptic number.

205134011 is a deficient number, since it is larger than the sum of its proper divisors (1).

205134011 is an equidigital number, since it uses as much as digits as its factorization.

205134011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 205134011 is about 14322.5001658230. The cubic root of 205134011 is about 589.7653102773.

Adding to 205134011 its reverse (110431502), we get a palindrome (315565513).

The spelling of 205134011 in words is "two hundred five million, one hundred thirty-four thousand, eleven".