205066231 has 4 divisors (see below), whose sum is σ = 205145512. Its totient is φ = 204986952.

The previous prime is 205066219. The next prime is 205066237. The reversal of 205066231 is 132660502.

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 205066231 - 2²¹ = 202969079 is a prime.

It is a super-3 number, since 3×205066231³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205066196 and 205066205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205066237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35625 + ... + 40978.

It is an arithmetic number, because the mean of its divisors is an integer number (51286378).

Almost surely, 2^205066231 is an apocalyptic number.

205066231 is a deficient number, since it is larger than the sum of its proper divisors (79281).

205066231 is an equidigital number, since it uses as much as digits as its factorization.

205066231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79280.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 205066231 is about 14320.1337633417. The cubic root of 205066231 is about 589.7003467346.

The spelling of 205066231 in words is "two hundred five million, sixty-six thousand, two hundred thirty-one".