205412223 has 8 divisors (see below), whose sum is σ = 273988528. Its totient is φ = 136888704.

The previous prime is 205412209. The next prime is 205412227. The reversal of 205412223 is 322214502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205412223 - 2⁸ = 205411967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205412223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205412227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2986 + ... + 20487.

It is an arithmetic number, because the mean of its divisors is an integer number (34248566).

Almost surely, 2^205412223 is an apocalyptic number.

205412223 is a deficient number, since it is larger than the sum of its proper divisors (68576305).

205412223 is a wasteful number, since it uses less digits than its factorization.

205412223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26393.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 205412223 is about 14332.2092853823. The cubic root of 205412223 is about 590.0318119398.

Adding to 205412223 its reverse (322214502), we get a palindrome (527626725).

The spelling of 205412223 in words is "two hundred five million, four hundred twelve thousand, two hundred twenty-three".