243041310431 has 4 divisors (see below), whose sum is σ = 253608323952. Its totient is φ = 232474296912.

The previous prime is 243041310383. The next prime is 243041310439. The reversal of 243041310431 is 134013140342.

It is a happy number.

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 243041310431 - 2³⁰ = 241967568607 is a prime.

It is a super-2 number, since 2×243041310431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243041310431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243041310439) 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, 5283506726 + ... + 5283506771.

It is an arithmetic number, because the mean of its divisors is an integer number (63402080988).

Almost surely, 2^243041310431 is an apocalyptic number.

243041310431 is a deficient number, since it is larger than the sum of its proper divisors (10567013521).

243041310431 is a wasteful number, since it uses less digits than its factorization.

243041310431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10567013520.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 243041310431 its reverse (134013140342), we get a palindrome (377054450773).

The spelling of 243041310431 in words is "two hundred forty-three billion, forty-one million, three hundred ten thousand, four hundred thirty-one".