131287147 has 8 divisors (see below), whose sum is σ = 136286640. Its totient is φ = 126319200.

The previous prime is 131287133. The next prime is 131287157. The reversal of 131287147 is 741782131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131287147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131287157) 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, 772 + ... + 16222.

It is an arithmetic number, because the mean of its divisors is an integer number (17035830).

Almost surely, 2^131287147 is an apocalyptic number.

131287147 is a deficient number, since it is larger than the sum of its proper divisors (4999493).

131287147 is a wasteful number, since it uses less digits than its factorization.

131287147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15773.

The product of its digits is 9408, while the sum is 34.

The square root of 131287147 is about 11458.0603506876. The cubic root of 131287147 is about 508.2461181078.

The spelling of 131287147 in words is "one hundred thirty-one million, two hundred eighty-seven thousand, one hundred forty-seven".