131210125205 has 16 divisors (see below), whose sum is σ = 157615694208. Its totient is φ = 104859144000.

The previous prime is 131210125201. The next prime is 131210125327. The reversal of 131210125205 is 502521012131.

It is not a de Polignac number, because 131210125205 - 2² = 131210125201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131210125201) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 37369400 + ... + 37372910.

It is an arithmetic number, because the mean of its divisors is an integer number (9850980888).

Almost surely, 2^131210125205 is an apocalyptic number.

It is an amenable number.

131210125205 is a deficient number, since it is larger than the sum of its proper divisors (26405569003).

131210125205 is a wasteful number, since it uses less digits than its factorization.

131210125205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9148.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 131210125205 its reverse (502521012131), we get a palindrome (633731137336).

The spelling of 131210125205 in words is "one hundred thirty-one billion, two hundred ten million, one hundred twenty-five thousand, two hundred five".