231024143 has 4 divisors (see below), whose sum is σ = 264027600. Its totient is φ = 198020688.

The previous prime is 231024139. The next prime is 231024149. The reversal of 231024143 is 341420132.

231024143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 231024143 - 2² = 231024139 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 (231024149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16501718 + ... + 16501731.

It is an arithmetic number, because the mean of its divisors is an integer number (66006900).

Almost surely, 2^231024143 is an apocalyptic number.

231024143 is a deficient number, since it is larger than the sum of its proper divisors (33003457).

231024143 is an equidigital number, since it uses as much as digits as its factorization.

231024143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33003456.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 231024143 is about 15199.4783792076. The cubic root of 231024143 is about 613.6006193307.

Adding to 231024143 its reverse (341420132), we get a palindrome (572444275).

The spelling of 231024143 in words is "two hundred thirty-one million, twenty-four thousand, one hundred forty-three".