231358143 has 8 divisors (see below), whose sum is σ = 319114800. Its totient is φ = 148920128.

The previous prime is 231358129. The next prime is 231358147. The reversal of 231358143 is 341853132.

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 231358143 - 2⁹ = 231357631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231358143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231358147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1329558 + ... + 1329731.

It is an arithmetic number, because the mean of its divisors is an integer number (39889350).

Almost surely, 2^231358143 is an apocalyptic number.

231358143 is a deficient number, since it is larger than the sum of its proper divisors (87756657).

231358143 is a wasteful number, since it uses less digits than its factorization.

231358143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659321.

The product of its digits is 8640, while the sum is 30.

The square root of 231358143 is about 15210.4616300755. The cubic root of 231358143 is about 613.8961785151.

The spelling of 231358143 in words is "two hundred thirty-one million, three hundred fifty-eight thousand, one hundred forty-three".