42544101331 has 2 divisors, whose sum is σ = 42544101332. Its totient is φ = 42544101330.

The previous prime is 42544101311. The next prime is 42544101359. The reversal of 42544101331 is 13310144524.

It is an a-pointer prime, because the next prime (42544101359) can be obtained adding 42544101331 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42544101331 - 2¹³ = 42544093139 is a prime.

It is a super-2 number, since 2×42544101331² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42544101331.

It is not a weakly prime, because it can be changed into another prime (42544101311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21272050665 + 21272050666.

It is an arithmetic number, because the mean of its divisors is an integer number (21272050666).

Almost surely, 2^42544101331 is an apocalyptic number.

42544101331 is a deficient number, since it is larger than the sum of its proper divisors (1).

42544101331 is an equidigital number, since it uses as much as digits as its factorization.

42544101331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 42544101331 its reverse (13310144524), we get a palindrome (55854245855).

The spelling of 42544101331 in words is "forty-two billion, five hundred forty-four million, one hundred one thousand, three hundred thirty-one".