42243131113 has 2 divisors, whose sum is σ = 42243131114. Its totient is φ = 42243131112.

The previous prime is 42243131089. The next prime is 42243131179. The reversal of 42243131113 is 31113134224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39900861504 + 2342269609 = 199752^2 + 48397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42243131113 is a prime.

It is not a weakly prime, because it can be changed into another prime (42243141113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21121565556 + 21121565557.

It is an arithmetic number, because the mean of its divisors is an integer number (21121565557).

Almost surely, 2^42243131113 is an apocalyptic number.

It is an amenable number.

42243131113 is a deficient number, since it is larger than the sum of its proper divisors (1).

42243131113 is an equidigital number, since it uses as much as digits as its factorization.

42243131113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

Adding to 42243131113 its reverse (31113134224), we get a palindrome (73356265337).

The spelling of 42243131113 in words is "forty-two billion, two hundred forty-three million, one hundred thirty-one thousand, one hundred thirteen".