131275917 has 16 divisors (see below), whose sum is σ = 200757760. Its totient is φ = 84693600.

The previous prime is 131275913. The next prime is 131275919. The reversal of 131275917 is 719572131.

It is not a de Polignac number, because 131275917 - 2² = 131275913 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 (131275913) 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, 77584 + ... + 79257.

It is an arithmetic number, because the mean of its divisors is an integer number (12547360).

Almost surely, 2^131275917 is an apocalyptic number.

It is an amenable number.

131275917 is a deficient number, since it is larger than the sum of its proper divisors (69481843).

131275917 is a wasteful number, since it uses less digits than its factorization.

131275917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156881 (or 156875 counting only the distinct ones).

The product of its digits is 13230, while the sum is 36.

The square root of 131275917 is about 11457.5702921693. The cubic root of 131275917 is about 508.2316262941.

It can be divided in two parts, 13127 and 5917, that added together give a square (19044 = 138²).

The spelling of 131275917 in words is "one hundred thirty-one million, two hundred seventy-five thousand, nine hundred seventeen".