6431189 has 2 divisors, whose sum is σ = 6431190. Its totient is φ = 6431188.

The previous prime is 6431171. The next prime is 6431207. The reversal of 6431189 is 9811346.

It is a happy number.

6431189 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (6431171) and next prime (6431207).

It can be written as a sum of positive squares in only one way, i.e., 5880625 + 550564 = 2425^2 + 742^2 .

It is a cyclic number.

It is not a de Polignac number, because 6431189 - 2²⁰ = 5382613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6451189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3215594 + 3215595.

It is an arithmetic number, because the mean of its divisors is an integer number (3215595).

Almost surely, 2^6431189 is an apocalyptic number.

It is an amenable number.

6431189 is a deficient number, since it is larger than the sum of its proper divisors (1).

6431189 is an equidigital number, since it uses as much as digits as its factorization.

6431189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 6431189 is about 2535.9789036977. The cubic root of 6431189 is about 185.9646616489.

The spelling of 6431189 in words is "six million, four hundred thirty-one thousand, one hundred eighty-nine".