2131275065 has 16 divisors (see below), whose sum is σ = 2573129856. Its totient is φ = 1694649600.

The previous prime is 2131275053. The next prime is 2131275067. The reversal of 2131275065 is 5605721312.

It is not a de Polignac number, because 2131275065 - 2¹² = 2131270969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131275067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758954 + ... + 761756.

It is an arithmetic number, because the mean of its divisors is an integer number (160820616).

Almost surely, 2^2131275065 is an apocalyptic number.

It is an amenable number.

2131275065 is a deficient number, since it is larger than the sum of its proper divisors (441854791).

2131275065 is a wasteful number, since it uses less digits than its factorization.

2131275065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3680.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 2131275065 is about 46165.7347499203. The cubic root of 2131275065 is about 1286.9050387089.

Adding to 2131275065 its reverse (5605721312), we get a palindrome (7736996377).

The spelling of 2131275065 in words is "two billion, one hundred thirty-one million, two hundred seventy-five thousand, sixty-five".