13531143247 has 2 divisors, whose sum is σ = 13531143248. Its totient is φ = 13531143246.

The previous prime is 13531143233. The next prime is 13531143257. The reversal of 13531143247 is 74234113531.

13531143247 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 is an emirp because it is prime and its reverse (74234113531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13531143247 - 2²³ = 13522754639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531143257) 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, 6765571623 + 6765571624.

It is an arithmetic number, because the mean of its divisors is an integer number (6765571624).

Almost surely, 2^13531143247 is an apocalyptic number.

13531143247 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531143247 is an equidigital number, since it uses as much as digits as its factorization.

13531143247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

Adding to 13531143247 its reverse (74234113531), we get a palindrome (87765256778).

The spelling of 13531143247 in words is "thirteen billion, five hundred thirty-one million, one hundred forty-three thousand, two hundred forty-seven".