231283543 has 4 divisors (see below), whose sum is σ = 231371568. Its totient is φ = 231195520.

The previous prime is 231283511. The next prime is 231283601. The reversal of 231283543 is 345382132.

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 231283543 - 2⁵ = 231283511 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231283243) 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, 39946 + ... + 45367.

It is an arithmetic number, because the mean of its divisors is an integer number (57842892).

Almost surely, 2^231283543 is an apocalyptic number.

231283543 is a deficient number, since it is larger than the sum of its proper divisors (88025).

231283543 is an equidigital number, since it uses as much as digits as its factorization.

231283543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88024.

The product of its digits is 17280, while the sum is 31.

The square root of 231283543 is about 15208.0091728010. The cubic root of 231283543 is about 613.8301890820.

The spelling of 231283543 in words is "two hundred thirty-one million, two hundred eighty-three thousand, five hundred forty-three".