243143103043 has 4 divisors (see below), whose sum is σ = 245415468600. Its totient is φ = 240870737488.

The previous prime is 243143103019. The next prime is 243143103059. The reversal of 243143103043 is 340301341342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340301341342 = 2 ⋅170150670671.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243143103043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243143103013) 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, 1136182618 + ... + 1136182831.

It is an arithmetic number, because the mean of its divisors is an integer number (61353867150).

Almost surely, 2^243143103043 is an apocalyptic number.

243143103043 is a deficient number, since it is larger than the sum of its proper divisors (2272365557).

243143103043 is a wasteful number, since it uses less digits than its factorization.

243143103043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272365556.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 243143103043 its reverse (340301341342), we get a palindrome (583444444385).

The spelling of 243143103043 in words is "two hundred forty-three billion, one hundred forty-three million, one hundred three thousand, forty-three".