13147213 has 2 divisors, whose sum is σ = 13147214. Its totient is φ = 13147212.

The previous prime is 13147181. The next prime is 13147217. The reversal of 13147213 is 31274131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12369289 + 777924 = 3517^2 + 882^2 .

It is a cyclic number.

It is not a de Polignac number, because 13147213 - 2⁵ = 13147181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13147217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6573606 + 6573607.

It is an arithmetic number, because the mean of its divisors is an integer number (6573607).

Almost surely, 2^13147213 is an apocalyptic number.

It is an amenable number.

13147213 is a deficient number, since it is larger than the sum of its proper divisors (1).

13147213 is an equidigital number, since it uses as much as digits as its factorization.

13147213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 13147213 is about 3625.9085757917. The cubic root of 13147213 is about 236.0176959344.

The spelling of 13147213 in words is "thirteen million, one hundred forty-seven thousand, two hundred thirteen".