13281901 has 2 divisors, whose sum is σ = 13281902. Its totient is φ = 13281900.

The previous prime is 13281889. The next prime is 13281911. The reversal of 13281901 is 10918231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8555625 + 4726276 = 2925^2 + 2174^2 .

It is a cyclic number.

It is not a de Polignac number, because 13281901 - 2⁷ = 13281773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13281911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6640950 + 6640951.

It is an arithmetic number, because the mean of its divisors is an integer number (6640951).

Almost surely, 2^13281901 is an apocalyptic number.

It is an amenable number.

13281901 is a deficient number, since it is larger than the sum of its proper divisors (1).

13281901 is an equidigital number, since it uses as much as digits as its factorization.

13281901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 13281901 is about 3644.4342496470. The cubic root of 13281901 is about 236.8209285454.

The spelling of 13281901 in words is "thirteen million, two hundred eighty-one thousand, nine hundred one".