13013321231 has 2 divisors, whose sum is σ = 13013321232. Its totient is φ = 13013321230.

The previous prime is 13013321221. The next prime is 13013321261. The reversal of 13013321231 is 13212331031.

13013321231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13013321231 is a prime.

It is a super-2 number, since 2×13013321231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13013321201) 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, 6506660615 + 6506660616.

It is an arithmetic number, because the mean of its divisors is an integer number (6506660616).

Almost surely, 2^13013321231 is an apocalyptic number.

13013321231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13013321231 is an equidigital number, since it uses as much as digits as its factorization.

13013321231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13013321231 its reverse (13212331031), we get a palindrome (26225652262).

The spelling of 13013321231 in words is "thirteen billion, thirteen million, three hundred twenty-one thousand, two hundred thirty-one".