131275487 has 8 divisors (see below), whose sum is σ = 150374400. Its totient is φ = 112262904.

The previous prime is 131275453. The next prime is 131275511. The reversal of 131275487 is 784572131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131275487 - 2¹⁰ = 131274463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131275487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131275447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18287 + ... + 24432.

It is an arithmetic number, because the mean of its divisors is an integer number (18796800).

Almost surely, 2^131275487 is an apocalyptic number.

131275487 is a deficient number, since it is larger than the sum of its proper divisors (19098913).

131275487 is an equidigital number, since it uses as much as digits as its factorization.

131275487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43165.

The product of its digits is 47040, while the sum is 38.

The square root of 131275487 is about 11457.5515272679. The cubic root of 131275487 is about 508.2310713818.

The spelling of 131275487 in words is "one hundred thirty-one million, two hundred seventy-five thousand, four hundred eighty-seven".