205310223 has 6 divisors (see below), whose sum is σ = 296559224. Its totient is φ = 136873476.

The previous prime is 205310221. The next prime is 205310263. The reversal of 205310223 is 322013502.

205310223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205310223 - 2¹ = 205310221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205310196 and 205310205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205310221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11406115 + ... + 11406132.

Almost surely, 2^205310223 is an apocalyptic number.

205310223 is a deficient number, since it is larger than the sum of its proper divisors (91249001).

205310223 is a wasteful number, since it uses less digits than its factorization.

205310223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22812253 (or 22812250 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 205310223 is about 14328.6504249354. The cubic root of 205310223 is about 589.9341332196.

Adding to 205310223 its reverse (322013502), we get a palindrome (527323725).

The spelling of 205310223 in words is "two hundred five million, three hundred ten thousand, two hundred twenty-three".