131044189 has 2 divisors, whose sum is σ = 131044190. Its totient is φ = 131044188.

The previous prime is 131044183. The next prime is 131044219. The reversal of 131044189 is 981440131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126562500 + 4481689 = 11250^2 + 2117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131044189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131044189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131044183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65522094 + 65522095.

It is an arithmetic number, because the mean of its divisors is an integer number (65522095).

Almost surely, 2^131044189 is an apocalyptic number.

It is an amenable number.

131044189 is a deficient number, since it is larger than the sum of its proper divisors (1).

131044189 is an equidigital number, since it uses as much as digits as its factorization.

131044189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 131044189 is about 11447.4533849237. The cubic root of 131044189 is about 507.9324069965.

The spelling of 131044189 in words is "one hundred thirty-one million, forty-four thousand, one hundred eighty-nine".