13531015109 has 2 divisors, whose sum is σ = 13531015110. Its totient is φ = 13531015108.

The previous prime is 13531015093. The next prime is 13531015111. The reversal of 13531015109 is 90151013531.

13531015109 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., 12957268900 + 573746209 = 113830^2 + 23953^2 .

It is a cyclic number.

It is not a de Polignac number, because 13531015109 - 2⁴ = 13531015093 is a prime.

Together with 13531015111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531015159) 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, 6765507554 + 6765507555.

It is an arithmetic number, because the mean of its divisors is an integer number (6765507555).

Almost surely, 2^13531015109 is an apocalyptic number.

It is an amenable number.

13531015109 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531015109 is an equidigital number, since it uses as much as digits as its factorization.

13531015109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2025, while the sum is 29.

The spelling of 13531015109 in words is "thirteen billion, five hundred thirty-one million, fifteen thousand, one hundred nine".