13281928117 has 2 divisors, whose sum is σ = 13281928118. Its totient is φ = 13281928116.

The previous prime is 13281928103. The next prime is 13281928171. The reversal of 13281928117 is 71182918231.

Together with next prime (13281928171) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6844914756 + 6437013361 = 82734^2 + 80231^2 .

It is an emirp because it is prime and its reverse (71182918231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13281928117 is a prime.

It is a super-2 number, since 2×13281928117² (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 (13281928417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6640964058 + 6640964059.

It is an arithmetic number, because the mean of its divisors is an integer number (6640964059).

Almost surely, 2^13281928117 is an apocalyptic number.

It is an amenable number.

13281928117 is a deficient number, since it is larger than the sum of its proper divisors (1).

13281928117 is an equidigital number, since it uses as much as digits as its factorization.

13281928117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 43.

The spelling of 13281928117 in words is "thirteen billion, two hundred eighty-one million, nine hundred twenty-eight thousand, one hundred seventeen".