205641113 has 8 divisors (see below), whose sum is σ = 209765376. Its totient is φ = 201526000.

The previous prime is 205641109. The next prime is 205641119. The reversal of 205641113 is 311146502.

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 205641113 - 2² = 205641109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205641119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59318 + ... + 62688.

It is an arithmetic number, because the mean of its divisors is an integer number (26220672).

Almost surely, 2^205641113 is an apocalyptic number.

It is an amenable number.

205641113 is a deficient number, since it is larger than the sum of its proper divisors (4124263).

205641113 is a wasteful number, since it uses less digits than its factorization.

205641113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 205641113 is about 14340.1922232584. The cubic root of 205641113 is about 590.2508872667.

Adding to 205641113 its reverse (311146502), we get a palindrome (516787615).

The spelling of 205641113 in words is "two hundred five million, six hundred forty-one thousand, one hundred thirteen".