205113 has 4 divisors (see below), whose sum is σ = 273488. Its totient is φ = 136740.

The previous prime is 205111. The next prime is 205129. The reversal of 205113 is 311502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 205113 - 2¹ = 205111 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34183 + ... + 34188.

It is an arithmetic number, because the mean of its divisors is an integer number (68372).

2²⁰⁵¹¹³ is an apocalyptic number.

It is an amenable number.

205113 is a deficient number, since it is larger than the sum of its proper divisors (68375).

205113 is an equidigital number, since it uses as much as digits as its factorization.

205113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68374.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 205113 is about 452.8940273397. The cubic root of 205113 is about 58.9745173876.

Adding to 205113 its reverse (311502), we get a palindrome (516615).

The spelling of 205113 in words is "two hundred five thousand, one hundred thirteen".