13531330247 has 2 divisors, whose sum is σ = 13531330248. Its totient is φ = 13531330246.

The previous prime is 13531330193. The next prime is 13531330277. The reversal of 13531330247 is 74203313531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13531330247 - 2²⁰ = 13530281671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531330277) 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, 6765665123 + 6765665124.

It is an arithmetic number, because the mean of its divisors is an integer number (6765665124).

Almost surely, 2^13531330247 is an apocalyptic number.

13531330247 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531330247 is an equidigital number, since it uses as much as digits as its factorization.

13531330247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 32.

Adding to 13531330247 its reverse (74203313531), we get a palindrome (87734643778).

The spelling of 13531330247 in words is "thirteen billion, five hundred thirty-one million, three hundred thirty thousand, two hundred forty-seven".