131788 has 12 divisors (see below), whose sum is σ = 235872. Its totient is φ = 64400.

The previous prime is 131783. The next prime is 131797. The reversal of 131788 is 887131.

It is a happy number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (131783) by changing a digit.

131788 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163 + ... + 538.

It is an arithmetic number, because the mean of its divisors is an integer number (19656).

2¹³¹⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

131788 is a deficient number, since it is larger than the sum of its proper divisors (104084).

131788 is a wasteful number, since it uses less digits than its factorization.

131788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 750 counting only the distinct ones).

The product of its digits is 1344, while the sum is 28.

The square root of 131788 is about 363.0261698556. The cubic root of 131788 is about 50.8891607979.

It can be divided in two parts, 131 and 788, that added together give a palindrome (919).

The spelling of 131788 in words is "one hundred thirty-one thousand, seven hundred eighty-eight".