131755189 has 2 divisors, whose sum is σ = 131755190. Its totient is φ = 131755188.

The previous prime is 131755123. The next prime is 131755193. The reversal of 131755189 is 981557131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95394289 + 36360900 = 9767^2 + 6030^2 .

It is a cyclic number.

It is not a de Polignac number, because 131755189 - 2⁷ = 131755061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131750189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65877594 + 65877595.

It is an arithmetic number, because the mean of its divisors is an integer number (65877595).

Almost surely, 2^131755189 is an apocalyptic number.

It is an amenable number.

131755189 is a deficient number, since it is larger than the sum of its proper divisors (1).

131755189 is an equidigital number, since it uses as much as digits as its factorization.

131755189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 40.

The square root of 131755189 is about 11478.4663174137. The cubic root of 131755189 is about 508.8493718922.

The spelling of 131755189 in words is "one hundred thirty-one million, seven hundred fifty-five thousand, one hundred eighty-nine".