243431131143013 has 24 divisors (see below), whose sum is σ = 270061579726848. Its totient is φ = 217612259856000.

The previous prime is 243431131143001. The next prime is 243431131143023. The reversal of 243431131143013 is 310341131134342.

It is not a de Polignac number, because 243431131143013 - 2³³ = 243422541208421 is a prime.

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 243431131143013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243431131143023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145825833 + ... + 147485713.

It is an arithmetic number, because the mean of its divisors is an integer number (11252565821952).

Almost surely, 2^{243431131143013} is an apocalyptic number.

It is an amenable number.

243431131143013 is a deficient number, since it is larger than the sum of its proper divisors (26630448583835).

243431131143013 is a wasteful number, since it uses less digits than its factorization.

243431131143013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663597 (or 1663536 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

Adding to 243431131143013 its reverse (310341131134342), we get a palindrome (553772262277355).

The spelling of 243431131143013 in words is "two hundred forty-three trillion, four hundred thirty-one billion, one hundred thirty-one million, one hundred forty-three thousand, thirteen".