131387575 has 48 divisors (see below), whose sum is σ = 186988032. Its totient is φ = 90720000.

The previous prime is 131387573. The next prime is 131387587. The reversal of 131387575 is 575783131.

It is not a de Polignac number, because 131387575 - 2¹ = 131387573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131387573) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 484690 + ... + 484960.

It is an arithmetic number, because the mean of its divisors is an integer number (3895584).

Almost surely, 2^131387575 is an apocalyptic number.

131387575 is a deficient number, since it is larger than the sum of its proper divisors (55600457).

131387575 is a wasteful number, since it uses less digits than its factorization.

131387575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 371 counting only the distinct ones).

The product of its digits is 88200, while the sum is 40.

The square root of 131387575 is about 11462.4419300601. The cubic root of 131387575 is about 508.3756792338.

It can be divided in two parts, 1313 and 87575, that added together give a palindrome (88888).

The spelling of 131387575 in words is "one hundred thirty-one million, three hundred eighty-seven thousand, five hundred seventy-five".