131331663 has 6 divisors (see below), whose sum is σ = 189701304. Its totient is φ = 87554436.

The previous prime is 131331659. The next prime is 131331689. The reversal of 131331663 is 366133131.

It is not a de Polignac number, because 131331663 - 2² = 131331659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131341663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7296195 + ... + 7296212.

It is an arithmetic number, because the mean of its divisors is an integer number (31616884).

Almost surely, 2^131331663 is an apocalyptic number.

131331663 is a deficient number, since it is larger than the sum of its proper divisors (58369641).

131331663 is a wasteful number, since it uses less digits than its factorization.

131331663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14592413 (or 14592410 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 131331663 is about 11460.0027486908. The cubic root of 131331663 is about 508.3035558896.

Adding to 131331663 its reverse (366133131), we get a palindrome (497464794).

The spelling of 131331663 in words is "one hundred thirty-one million, three hundred thirty-one thousand, six hundred sixty-three".