13430881081 has 2 divisors, whose sum is σ = 13430881082. Its totient is φ = 13430881080.

The previous prime is 13430881043. The next prime is 13430881097. The reversal of 13430881081 is 18018803431.

13430881081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9725115456 + 3705765625 = 98616^2 + 60875^2 .

It is a cyclic number.

It is not a de Polignac number, because 13430881081 - 2¹⁷ = 13430750009 is a prime.

It is a super-2 number, since 2×13430881081² (a number of 21 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 13430881081.

It is not a weakly prime, because it can be changed into another prime (13430881021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6715440540 + 6715440541.

It is an arithmetic number, because the mean of its divisors is an integer number (6715440541).

Almost surely, 2^13430881081 is an apocalyptic number.

It is an amenable number.

13430881081 is a deficient number, since it is larger than the sum of its proper divisors (1).

13430881081 is an equidigital number, since it uses as much as digits as its factorization.

13430881081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 13430881081 in words is "thirteen billion, four hundred thirty million, eight hundred eighty-one thousand, eighty-one".