13243873 has 2 divisors, whose sum is σ = 13243874. Its totient is φ = 13243872.

The previous prime is 13243859. The next prime is 13243877. The reversal of 13243873 is 37834231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11135569 + 2108304 = 3337^2 + 1452^2 .

It is a cyclic number.

It is not a de Polignac number, because 13243873 - 2¹³ = 13235681 is a prime.

It is not a weakly prime, because it can be changed into another prime (13243877) 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, 6621936 + 6621937.

It is an arithmetic number, because the mean of its divisors is an integer number (6621937).

Almost surely, 2^13243873 is an apocalyptic number.

It is an amenable number.

13243873 is a deficient number, since it is larger than the sum of its proper divisors (1).

13243873 is an equidigital number, since it uses as much as digits as its factorization.

13243873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 13243873 is about 3639.2132391494. The cubic root of 13243873 is about 236.5946949924.

The spelling of 13243873 in words is "thirteen million, two hundred forty-three thousand, eight hundred seventy-three".