205434233 has 4 divisors (see below), whose sum is σ = 205704948. Its totient is φ = 205163520.

The previous prime is 205434217. The next prime is 205434247. The reversal of 205434233 is 332434502.

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

It can be written as a sum of positive squares in 2 ways, for example, as 44448889 + 160985344 = 6667^2 + 12688^2 .

It is a cyclic number.

It is not a de Polignac number, because 205434233 - 2⁴ = 205434217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205434253) 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, 134216 + ... + 135737.

It is an arithmetic number, because the mean of its divisors is an integer number (51426237).

Almost surely, 2^205434233 is an apocalyptic number.

It is an amenable number.

205434233 is a deficient number, since it is larger than the sum of its proper divisors (270715).

205434233 is an equidigital number, since it uses as much as digits as its factorization.

205434233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270714.

The product of its (nonzero) digits is 8640, while the sum is 26.

The square root of 205434233 is about 14332.9771157286. The cubic root of 205434233 is about 590.0528852336.

Adding to 205434233 its reverse (332434502), we get a palindrome (537868735).

The spelling of 205434233 in words is "two hundred five million, four hundred thirty-four thousand, two hundred thirty-three".