131287648 has 24 divisors (see below), whose sum is σ = 260367912. Its totient is φ = 65162496.

The previous prime is 131287627. The next prime is 131287649. The reversal of 131287648 is 846782131.

It is a self number, because there is not a number n which added to its sum of digits gives 131287648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131287649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10590 + ... + 19357.

It is an arithmetic number, because the mean of its divisors is an integer number (10848663).

Almost surely, 2^131287648 is an apocalyptic number.

It is an amenable number.

131287648 is a deficient number, since it is larger than the sum of its proper divisors (129080264).

131287648 is a wasteful number, since it uses less digits than its factorization.

131287648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30094 (or 30086 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 131287648 is about 11458.0822130058. The cubic root of 131287648 is about 508.2467646067.

The spelling of 131287648 in words is "one hundred thirty-one million, two hundred eighty-seven thousand, six hundred forty-eight".