13363813 has 2 divisors, whose sum is σ = 13363814. Its totient is φ = 13363812.

The previous prime is 13363811. The next prime is 13363817. The reversal of 13363813 is 31836331.

13363813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10381284 + 2982529 = 3222^2 + 1727^2 .

It is an emirp because it is prime and its reverse (31836331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13363813 - 2¹ = 13363811 is a prime.

Together with 13363811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13363811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6681906 + 6681907.

It is an arithmetic number, because the mean of its divisors is an integer number (6681907).

Almost surely, 2^13363813 is an apocalyptic number.

It is an amenable number.

13363813 is a deficient number, since it is larger than the sum of its proper divisors (1).

13363813 is an equidigital number, since it uses as much as digits as its factorization.

13363813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 13363813 is about 3655.6549344816. The cubic root of 13363813 is about 237.3067709948.

The spelling of 13363813 in words is "thirteen million, three hundred sixty-three thousand, eight hundred thirteen".