2131589 has 4 divisors (see below), whose sum is σ = 2145324. Its totient is φ = 2117856.

The previous prime is 2131573. The next prime is 2131601. The reversal of 2131589 is 9851312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1464100 + 667489 = 1210^2 + 817^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131589 - 2⁴ = 2131573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6632 + ... + 6945.

It is an arithmetic number, because the mean of its divisors is an integer number (536331).

2^2131589 is an apocalyptic number.

It is an amenable number.

2131589 is a deficient number, since it is larger than the sum of its proper divisors (13735).

2131589 is a wasteful number, since it uses less digits than its factorization.

2131589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13734.

The product of its digits is 2160, while the sum is 29.

The square root of 2131589 is about 1459.9962328719. The cubic root of 2131589 is about 128.6968222278.

The spelling of 2131589 in words is "two million, one hundred thirty-one thousand, five hundred eighty-nine".