205031315130 has 64 divisors (see below), whose sum is σ = 493625138688. Its totient is φ = 54502940160.

The previous prime is 205031315123. The next prime is 205031315143. The reversal of 205031315130 is 31513130502.

It is a self number, because there is not a number n which added to its sum of digits gives 205031315130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45999862 + ... + 46004318.

It is an arithmetic number, because the mean of its divisors is an integer number (7712892792).

Almost surely, 2^205031315130 is an apocalyptic number.

205031315130 is an abundant number, since it is smaller than the sum of its proper divisors (288593823558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205031315130 is a wasteful number, since it uses less digits than its factorization.

205031315130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8951.

The product of its (nonzero) digits is 1350, while the sum is 24.

Adding to 205031315130 its reverse (31513130502), we get a palindrome (236544445632).

The spelling of 205031315130 in words is "two hundred five billion, thirty-one million, three hundred fifteen thousand, one hundred thirty".