131807 has 4 divisors (see below), whose sum is σ = 141960. Its totient is φ = 121656.

The previous prime is 131797. The next prime is 131837. The reversal of 131807 is 708131.

131807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131807 - 2⁶ = 131743 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 131807.

It is not an unprimeable number, because it can be changed into a prime (131837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5057 + ... + 5082.

It is an arithmetic number, because the mean of its divisors is an integer number (35490).

2¹³¹⁸⁰⁷ is an apocalyptic number.

131807 is a deficient number, since it is larger than the sum of its proper divisors (10153).

131807 is a wasteful number, since it uses less digits than its factorization.

131807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10152.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 131807 is about 363.0523378247. The cubic root of 131807 is about 50.8916062598.

Adding to 131807 its reverse (708131), we get a palindrome (839938).

The spelling of 131807 in words is "one hundred thirty-one thousand, eight hundred seven".