131981548 has 12 divisors (see below), whose sum is σ = 233255232. Its totient is φ = 65337200.

The previous prime is 131981461. The next prime is 131981561. The reversal of 131981548 is 845189131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131981548.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162940 + ... + 163747.

It is an arithmetic number, because the mean of its divisors is an integer number (19437936).

Almost surely, 2^131981548 is an apocalyptic number.

It is an amenable number.

131981548 is a deficient number, since it is larger than the sum of its proper divisors (101273684).

131981548 is a wasteful number, since it uses less digits than its factorization.

131981548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326792 (or 326790 counting only the distinct ones).

The product of its digits is 34560, while the sum is 40.

The square root of 131981548 is about 11488.3222447840. The cubic root of 131981548 is about 509.1406108595.

The spelling of 131981548 in words is "one hundred thirty-one million, nine hundred eighty-one thousand, five hundred forty-eight".