205031027 has 4 divisors (see below), whose sum is σ = 205220736. Its totient is φ = 204841320.

The previous prime is 205031011. The next prime is 205031053. The reversal of 205031027 is 720130502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205031027 - 2⁴ = 205031011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205031227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93224 + ... + 95397.

It is an arithmetic number, because the mean of its divisors is an integer number (51305184).

Almost surely, 2^205031027 is an apocalyptic number.

205031027 is a deficient number, since it is larger than the sum of its proper divisors (189709).

205031027 is a wasteful number, since it uses less digits than its factorization.

205031027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189708.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 205031027 is about 14318.9045321212. The cubic root of 205031027 is about 589.6665999154. Note that the first 3 decimals are identical.

Adding to 205031027 its reverse (720130502), we get a palindrome (925161529).

The spelling of 205031027 in words is "two hundred five million, thirty-one thousand, twenty-seven".