205134307 has 16 divisors (see below), whose sum is σ = 238824640. Its totient is φ = 172564992.

The previous prime is 205134287. The next prime is 205134329. The reversal of 205134307 is 703431502.

205134307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205134307 - 2¹⁹ = 204610019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205131307) 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, 116143 + ... + 117895.

It is an arithmetic number, because the mean of its divisors is an integer number (14926540).

Almost surely, 2^205134307 is an apocalyptic number.

205134307 is a deficient number, since it is larger than the sum of its proper divisors (33690333).

205134307 is a wasteful number, since it uses less digits than its factorization.

205134307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 205134307 is about 14322.5104992107. The cubic root of 205134307 is about 589.7655939463.

Adding to 205134307 its reverse (703431502), we get a palindrome (908565809).

The spelling of 205134307 in words is "two hundred five million, one hundred thirty-four thousand, three hundred seven".