205305130 has 32 divisors (see below), whose sum is σ = 386467200. Its totient is φ = 78378432.

The previous prime is 205305109. The next prime is 205305131. The reversal of 205305130 is 31503502.

205305130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 205305098 and 205305107.

It is not an unprimeable number, because it can be changed into a prime (205305131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162441 + ... + 163699.

It is an arithmetic number, because the mean of its divisors is an integer number (12077100).

Almost surely, 2^205305130 is an apocalyptic number.

205305130 is a deficient number, since it is larger than the sum of its proper divisors (181162070).

205305130 is a wasteful number, since it uses less digits than its factorization.

205305130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 205305130 is about 14328.4727029785. The cubic root of 205305130 is about 589.9292551391.

Adding to 205305130 its reverse (31503502), we get a palindrome (236808632).

The spelling of 205305130 in words is "two hundred five million, three hundred five thousand, one hundred thirty".