131688837 has 24 divisors (see below), whose sum is σ = 224407040. Its totient is φ = 72822240.

The previous prime is 131688827. The next prime is 131688839. The reversal of 131688837 is 738886131.

It is not a de Polignac number, because 131688837 - 2¹⁰ = 131687813 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131688792 and 131688801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131688839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31762 + ... + 35667.

Almost surely, 2^131688837 is an apocalyptic number.

It is an amenable number.

131688837 is a deficient number, since it is larger than the sum of its proper divisors (92718203).

131688837 is a wasteful number, since it uses less digits than its factorization.

131688837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67473 (or 67470 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 131688837 is about 11475.5756718345. The cubic root of 131688837 is about 508.7639385895.

The spelling of 131688837 in words is "one hundred thirty-one million, six hundred eighty-eight thousand, eight hundred thirty-seven".