131804189 has 4 divisors (see below), whose sum is σ = 143786400. Its totient is φ = 119821980.

The previous prime is 131804177. The next prime is 131804203. The reversal of 131804189 is 981408131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131804189 - 2²⁴ = 115026973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131804119) 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, 5991089 + ... + 5991110.

It is an arithmetic number, because the mean of its divisors is an integer number (35946600).

Almost surely, 2^131804189 is an apocalyptic number.

It is an amenable number.

131804189 is a deficient number, since it is larger than the sum of its proper divisors (11982211).

131804189 is a wasteful number, since it uses less digits than its factorization.

131804189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11982210.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 131804189 is about 11480.6005504939. The cubic root of 131804189 is about 508.9124447500.

The spelling of 131804189 in words is "one hundred thirty-one million, eight hundred four thousand, one hundred eighty-nine".