205602113 has 4 divisors (see below), whose sum is σ = 205674288. Its totient is φ = 205529940.

The previous prime is 205602107. The next prime is 205602127. The reversal of 205602113 is 311206502.

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, and also an emirpimes, since its reverse is a distinct semiprime: 311206502 = 2 ⋅155603251.

It is a cyclic number.

It is not a de Polignac number, because 205602113 - 2²⁶ = 138493249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205601113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31631 + ... + 37572.

It is an arithmetic number, because the mean of its divisors is an integer number (51418572).

Almost surely, 2^205602113 is an apocalyptic number.

It is an amenable number.

205602113 is a deficient number, since it is larger than the sum of its proper divisors (72175).

205602113 is an equidigital number, since it uses as much as digits as its factorization.

205602113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72174.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 205602113 is about 14338.8323443717. The cubic root of 205602113 is about 590.2135710581.

Adding to 205602113 its reverse (311206502), we get a palindrome (516808615).

The spelling of 205602113 in words is "two hundred five million, six hundred two thousand, one hundred thirteen".