243203105143 has 8 divisors (see below), whose sum is σ = 245077747200. Its totient is φ = 241328738040.

The previous prime is 243203105129. The next prime is 243203105177. The reversal of 243203105143 is 341501302342.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 243203105143 - 2⁵ = 243203105111 is a prime.

It is a super-2 number, since 2×243203105143² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243203165143) 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, 1929996 + ... + 2052142.

It is an arithmetic number, because the mean of its divisors is an integer number (30634718400).

Almost surely, 2^243203105143 is an apocalyptic number.

243203105143 is a deficient number, since it is larger than the sum of its proper divisors (1874642057).

243203105143 is a wasteful number, since it uses less digits than its factorization.

243203105143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137477.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 243203105143 its reverse (341501302342), we get a palindrome (584704407485).

The spelling of 243203105143 in words is "two hundred forty-three billion, two hundred three million, one hundred five thousand, one hundred forty-three".