231144589 has 8 divisors (see below), whose sum is σ = 249827480. Its totient is φ = 212590656.

The previous prime is 231144581. The next prime is 231144601. The reversal of 231144589 is 985441132.

It can be written as a sum of positive squares in 4 ways, for example, as 2832489 + 228312100 = 1683^2 + 15110^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231144589 - 2³ = 231144581 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 (231144581) 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 in 7 ways as a sum of consecutive naturals, for example, 28494 + ... + 35695.

It is an arithmetic number, because the mean of its divisors is an integer number (31228435).

Almost surely, 2^231144589 is an apocalyptic number.

It is an amenable number.

231144589 is a deficient number, since it is larger than the sum of its proper divisors (18682891).

231144589 is a wasteful number, since it uses less digits than its factorization.

231144589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64479.

The product of its digits is 34560, while the sum is 37.

The square root of 231144589 is about 15203.4400383597. The cubic root of 231144589 is about 613.7072357493.

The spelling of 231144589 in words is "two hundred thirty-one million, one hundred forty-four thousand, five hundred eighty-nine".