131282287 has 8 divisors (see below), whose sum is σ = 135030672. Its totient is φ = 127560000.

The previous prime is 131282273. The next prime is 131282299. The reversal of 131282287 is 782282131.

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 131282287 - 2¹⁵ = 131249519 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 (131282237) 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, 3913 + ... + 16669.

It is an arithmetic number, because the mean of its divisors is an integer number (16878834).

Almost surely, 2^131282287 is an apocalyptic number.

131282287 is a deficient number, since it is larger than the sum of its proper divisors (3748385).

131282287 is a wasteful number, since it uses less digits than its factorization.

131282287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13049.

The product of its digits is 10752, while the sum is 34.

The square root of 131282287 is about 11457.8482709451. The cubic root of 131282287 is about 508.2398465962.

The spelling of 131282287 in words is "one hundred thirty-one million, two hundred eighty-two thousand, two hundred eighty-seven".