231584143845 has 16 divisors (see below), whose sum is σ = 370545837120. Its totient is φ = 123507807744.

The previous prime is 231584143829. The next prime is 231584143867. The reversal of 231584143845 is 548341485132.

It is not a de Polignac number, because 231584143845 - 2⁴ = 231584143829 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231584143794 and 231584143803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321562 + ... + 752708.

It is an arithmetic number, because the mean of its divisors is an integer number (23159114820).

Almost surely, 2^231584143845 is an apocalyptic number.

It is an amenable number.

231584143845 is a deficient number, since it is larger than the sum of its proper divisors (138961693275).

231584143845 is a wasteful number, since it uses less digits than its factorization.

231584143845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466964.

The product of its digits is 1843200, while the sum is 48.

The spelling of 231584143845 in words is "two hundred thirty-one billion, five hundred eighty-four million, one hundred forty-three thousand, eight hundred forty-five".