231424143 has 8 divisors (see below), whose sum is σ = 308708400. Its totient is φ = 154211328.

The previous prime is 231424139. The next prime is 231424153. The reversal of 231424143 is 341424132.

231424143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 231424143 - 2² = 231424139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231424103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9778 + ... + 23631.

It is an arithmetic number, because the mean of its divisors is an integer number (38588550).

Almost surely, 2^231424143 is an apocalyptic number.

231424143 is a deficient number, since it is larger than the sum of its proper divisors (77284257).

231424143 is a wasteful number, since it uses less digits than its factorization.

231424143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35721.

The product of its digits is 2304, while the sum is 24.

The square root of 231424143 is about 15212.6310347684. The cubic root of 231424143 is about 613.9545487617.

Adding to 231424143 its reverse (341424132), we get a palindrome (572848275).

The spelling of 231424143 in words is "two hundred thirty-one million, four hundred twenty-four thousand, one hundred forty-three".