13243530401 has 2 divisors, whose sum is σ = 13243530402. Its totient is φ = 13243530400.

The previous prime is 13243530323. The next prime is 13243530437. The reversal of 13243530401 is 10403534231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12104400400 + 1139130001 = 110020^2 + 33751^2 .

It is an emirp because it is prime and its reverse (10403534231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13243530401 is a prime.

It is a super-2 number, since 2×13243530401² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13243530301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6621765200 + 6621765201.

It is an arithmetic number, because the mean of its divisors is an integer number (6621765201).

Almost surely, 2^13243530401 is an apocalyptic number.

It is an amenable number.

13243530401 is a deficient number, since it is larger than the sum of its proper divisors (1).

13243530401 is an equidigital number, since it uses as much as digits as its factorization.

13243530401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

The spelling of 13243530401 in words is "thirteen billion, two hundred forty-three million, five hundred thirty thousand, four hundred one".