131806 has 8 divisors (see below), whose sum is σ = 201240. Its totient is φ = 64728.

The previous prime is 131797. The next prime is 131837. The reversal of 131806 is 608131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441 + ... + 676.

It is an arithmetic number, because the mean of its divisors is an integer number (25155).

2¹³¹⁸⁰⁶ is an apocalyptic number.

131806 is a deficient number, since it is larger than the sum of its proper divisors (69434).

131806 is a wasteful number, since it uses less digits than its factorization.

131806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 131806 is about 363.0509606102. The cubic root of 131806 is about 50.8914775572.

Adding to 131806 its reverse (608131), we get a palindrome (739937).

The spelling of 131806 in words is "one hundred thirty-one thousand, eight hundred six".