243131442011 has 16 divisors (see below), whose sum is σ = 251662494720. Its totient is φ = 234727606080.

The previous prime is 243131441999. The next prime is 243131442013. The reversal of 243131442011 is 110244131342.

It is a cyclic number.

It is not a de Polignac number, because 243131442011 - 2²² = 243127247707 is a prime.

It is a super-2 number, since 2×243131442011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243131442013) 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, 5989100 + ... + 6029558.

It is an arithmetic number, because the mean of its divisors is an integer number (15728905920).

Almost surely, 2^243131442011 is an apocalyptic number.

243131442011 is a deficient number, since it is larger than the sum of its proper divisors (8531052709).

243131442011 is a wasteful number, since it uses less digits than its factorization.

243131442011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42026.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 243131442011 its reverse (110244131342), we get a palindrome (353375573353).

The spelling of 243131442011 in words is "two hundred forty-three billion, one hundred thirty-one million, four hundred forty-two thousand, eleven".