205130871 has 12 divisors (see below), whose sum is σ = 323236680. Its totient is φ = 124321680.

The previous prime is 205130797. The next prime is 205130873. The reversal of 205130871 is 178031502.

205130871 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 205130871 - 2¹⁴ = 205114487 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205130873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1035916 + ... + 1036113.

It is an arithmetic number, because the mean of its divisors is an integer number (26936390).

Almost surely, 2^205130871 is an apocalyptic number.

205130871 is a deficient number, since it is larger than the sum of its proper divisors (118105809).

205130871 is a wasteful number, since it uses less digits than its factorization.

205130871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072046 (or 2072043 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 205130871 is about 14322.3905476705. The cubic root of 205130871 is about 589.7623010697.

The spelling of 205130871 in words is "two hundred five million, one hundred thirty thousand, eight hundred seventy-one".