13511531227 has 2 divisors, whose sum is σ = 13511531228. Its totient is φ = 13511531226.

The previous prime is 13511531141. The next prime is 13511531261. The reversal of 13511531227 is 72213511531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13511531227 - 2¹¹ = 13511529179 is a prime.

It is a super-2 number, since 2×13511531227² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13511531287) 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, 6755765613 + 6755765614.

It is an arithmetic number, because the mean of its divisors is an integer number (6755765614).

Almost surely, 2^13511531227 is an apocalyptic number.

13511531227 is a deficient number, since it is larger than the sum of its proper divisors (1).

13511531227 is an equidigital number, since it uses as much as digits as its factorization.

13511531227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 31.

The spelling of 13511531227 in words is "thirteen billion, five hundred eleven million, five hundred thirty-one thousand, two hundred twenty-seven".