131316775 has 48 divisors (see below), whose sum is σ = 179988480. Its totient is φ = 94723200.

The previous prime is 131316763. The next prime is 131316781. The reversal of 131316775 is 577613131.

It is a de Polignac number, because none of the positive numbers 2^k-131316775 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131316775.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 944656 + ... + 944794.

It is an arithmetic number, because the mean of its divisors is an integer number (3749760).

Almost surely, 2^131316775 is an apocalyptic number.

131316775 is a deficient number, since it is larger than the sum of its proper divisors (48671705).

131316775 is a wasteful number, since it uses less digits than its factorization.

131316775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 251 counting only the distinct ones).

The product of its digits is 13230, while the sum is 34.

The square root of 131316775 is about 11459.3531667368. The cubic root of 131316775 is about 508.2843477536.

The spelling of 131316775 in words is "one hundred thirty-one million, three hundred sixteen thousand, seven hundred seventy-five".