131800 has 24 divisors (see below), whose sum is σ = 306900. Its totient is φ = 52640.

The previous prime is 131797. The next prime is 131837. The reversal of 131800 is 8131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130 + ... + 529.

2¹³¹⁸⁰⁰ is an apocalyptic number.

131800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131800 is an abundant number, since it is smaller than the sum of its proper divisors (175100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131800 is a wasteful number, since it uses less digits than its factorization.

131800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 131800 is about 363.0426972134. The cubic root of 131800 is about 50.8907053275.

Adding to 131800 its reverse (8131), we get a palindrome (139931).

The spelling of 131800 in words is "one hundred thirty-one thousand, eight hundred".