243131442103 has 16 divisors (see below), whose sum is σ = 266382743040. Its totient is φ = 220072593600.

The previous prime is 243131442097. The next prime is 243131442107. The reversal of 243131442103 is 301244131342.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243131442103 is a prime.

It is a super-2 number, since 2×243131442103² (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 (243131442107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4801051 + ... + 4851427.

It is an arithmetic number, because the mean of its divisors is an integer number (16648921440).

Almost surely, 2^243131442103 is an apocalyptic number.

243131442103 is a deficient number, since it is larger than the sum of its proper divisors (23251300937).

243131442103 is a wasteful number, since it uses less digits than its factorization.

243131442103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52278.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 243131442103 its reverse (301244131342), we get a palindrome (544375573445).

The spelling of 243131442103 in words is "two hundred forty-three billion, one hundred thirty-one million, four hundred forty-two thousand, one hundred three".