13534241321 has 2 divisors, whose sum is σ = 13534241322. Its totient is φ = 13534241320.

The previous prime is 13534241309. The next prime is 13534241341. The reversal of 13534241321 is 12314243531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9278505625 + 4255735696 = 96325^2 + 65236^2 .

It is a cyclic number.

It is not a de Polignac number, because 13534241321 - 2¹⁰ = 13534240297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13534241341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6767120660 + 6767120661.

It is an arithmetic number, because the mean of its divisors is an integer number (6767120661).

Almost surely, 2^13534241321 is an apocalyptic number.

It is an amenable number.

13534241321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13534241321 is an equidigital number, since it uses as much as digits as its factorization.

13534241321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

Adding to 13534241321 its reverse (12314243531), we get a palindrome (25848484852).

The spelling of 13534241321 in words is "thirteen billion, five hundred thirty-four million, two hundred forty-one thousand, three hundred twenty-one".