131107189 has 2 divisors, whose sum is σ = 131107190. Its totient is φ = 131107188.

The previous prime is 131107181. The next prime is 131107211. The reversal of 131107189 is 981701131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113592964 + 17514225 = 10658^2 + 4185^2 .

It is a cyclic number.

It is not a de Polignac number, because 131107189 - 2³ = 131107181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131107189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131107181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65553594 + 65553595.

It is an arithmetic number, because the mean of its divisors is an integer number (65553595).

Almost surely, 2^131107189 is an apocalyptic number.

It is an amenable number.

131107189 is a deficient number, since it is larger than the sum of its proper divisors (1).

131107189 is an equidigital number, since it uses as much as digits as its factorization.

131107189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 31.

The square root of 131107189 is about 11450.2047579945. The cubic root of 131107189 is about 508.0137907782.

The spelling of 131107189 in words is "one hundred thirty-one million, one hundred seven thousand, one hundred eighty-nine".