131800189 has 24 divisors (see below), whose sum is σ = 145851840. Its totient is φ = 118831680.

The previous prime is 131800187. The next prime is 131800213. The reversal of 131800189 is 981008131.

It is not a de Polignac number, because 131800189 - 2¹ = 131800187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131800189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131800181) 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, 1480857 + ... + 1480945.

It is an arithmetic number, because the mean of its divisors is an integer number (6077160).

Almost surely, 2^131800189 is an apocalyptic number.

It is an amenable number.

131800189 is a deficient number, since it is larger than the sum of its proper divisors (14051651).

131800189 is an equidigital number, since it uses as much as digits as its factorization.

131800189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 131800189 is about 11480.4263422575. The cubic root of 131800189 is about 508.9072965313.

The spelling of 131800189 in words is "one hundred thirty-one million, eight hundred thousand, one hundred eighty-nine".