131500775 has 48 divisors (see below), whose sum is σ = 199939584. Its totient is φ = 83825280.

The previous prime is 131500771. The next prime is 131500781. The reversal of 131500775 is 577005131.

It is not a de Polignac number, because 131500775 - 2² = 131500771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131500771) by changing a digit.

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, 148484 + ... + 149366.

It is an arithmetic number, because the mean of its divisors is an integer number (4165408).

Almost surely, 2^131500775 is an apocalyptic number.

131500775 is a deficient number, since it is larger than the sum of its proper divisors (68438809).

131500775 is a wasteful number, since it uses less digits than its factorization.

131500775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 3675, while the sum is 29.

The square root of 131500775 is about 11467.3787327357. The cubic root of 131500775 is about 508.5216382600.

The spelling of 131500775 in words is "one hundred thirty-one million, five hundred thousand, seven hundred seventy-five".