131077189 has 2 divisors, whose sum is σ = 131077190. Its totient is φ = 131077188.

The previous prime is 131077183. The next prime is 131077213. The reversal of 131077189 is 981770131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116316225 + 14760964 = 10785^2 + 3842^2 .

It is a cyclic number.

It is not a de Polignac number, because 131077189 - 2⁷ = 131077061 is a prime.

It is a super-2 number, since 2×131077189² = 34362458952283442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131077183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65538594 + 65538595.

It is an arithmetic number, because the mean of its divisors is an integer number (65538595).

Almost surely, 2^131077189 is an apocalyptic number.

It is an amenable number.

131077189 is a deficient number, since it is larger than the sum of its proper divisors (1).

131077189 is an equidigital number, since it uses as much as digits as its factorization.

131077189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 37.

The square root of 131077189 is about 11448.8946628048. The cubic root of 131077189 is about 507.9750398487.

The spelling of 131077189 in words is "one hundred thirty-one million, seventy-seven thousand, one hundred eighty-nine".