243143 has 8 divisors (see below), whose sum is σ = 261120. Its totient is φ = 225720.

The previous prime is 243137. The next prime is 243149. The reversal of 243143 is 341342.

It is an interprime number because it is at equal distance from previous prime (243137) and next prime (243149).

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

It is not a de Polignac number, because 243143 - 2⁸ = 242887 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 (243149) 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, 1178 + ... + 1368.

It is an arithmetic number, because the mean of its divisors is an integer number (32640).

2²⁴³¹⁴³ is an apocalyptic number.

243143 is a deficient number, since it is larger than the sum of its proper divisors (17977).

243143 is a wasteful number, since it uses less digits than its factorization.

243143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277.

The product of its digits is 288, while the sum is 17.

The square root of 243143 is about 493.0953254696. The cubic root of 243143 is about 62.4147531137.

Adding to 243143 its reverse (341342), we get a palindrome (584485).

The spelling of 243143 in words is "two hundred forty-three thousand, one hundred forty-three", and thus it is an iban number.