11331131336281 has 2 divisors, whose sum is σ = 11331131336282. Its totient is φ = 11331131336280.

The previous prime is 11331131336279. The next prime is 11331131336309. The reversal of 11331131336281 is 18263313113311.

11331131336281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8263992080656 + 3067139255625 = 2874716^2 + 1751325^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331131336281 - 2¹ = 11331131336279 is a prime.

It is a super-2 number, since 2×11331131336281² (a number of 27 digits) contains 22 as substring.

Together with 11331131336279, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11331131336281.

It is not a weakly prime, because it can be changed into another prime (11331131336201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665565668140 + 5665565668141.

It is an arithmetic number, because the mean of its divisors is an integer number (5665565668141).

Almost surely, 2^{11331131336281} is an apocalyptic number.

It is an amenable number.

11331131336281 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331131336281 is an equidigital number, since it uses as much as digits as its factorization.

11331131336281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 37.

Adding to 11331131336281 its reverse (18263313113311), we get a palindrome (29594444449592).

The spelling of 11331131336281 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred thirty-six thousand, two hundred eighty-one".