205268311 has 8 divisors (see below), whose sum is σ = 209394720. Its totient is φ = 201151392.

The previous prime is 205268309. The next prime is 205268321. The reversal of 205268311 is 113862502.

205268311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 205268311 - 2¹ = 205268309 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 205268311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205268321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54846 + ... + 58468.

It is an arithmetic number, because the mean of its divisors is an integer number (26174340).

Almost surely, 2^205268311 is an apocalyptic number.

205268311 is a deficient number, since it is larger than the sum of its proper divisors (4126409).

205268311 is a wasteful number, since it uses less digits than its factorization.

205268311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 205268311 is about 14327.1878259483. The cubic root of 205268311 is about 589.8939874641.

The spelling of 205268311 in words is "two hundred five million, two hundred sixty-eight thousand, three hundred eleven".