13143217 has 2 divisors, whose sum is σ = 13143218. Its totient is φ = 13143216.

The previous prime is 13143211. The next prime is 13143223. The reversal of 13143217 is 71234131.

It is a balanced prime because it is at equal distance from previous prime (13143211) and next prime (13143223).

It can be written as a sum of positive squares in only one way, i.e., 13024881 + 118336 = 3609^2 + 344^2 .

It is a cyclic number.

It is not a de Polignac number, because 13143217 - 2⁷ = 13143089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13143211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6571608 + 6571609.

It is an arithmetic number, because the mean of its divisors is an integer number (6571609).

Almost surely, 2^13143217 is an apocalyptic number.

It is an amenable number.

13143217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13143217 is an equidigital number, since it uses as much as digits as its factorization.

13143217 is an evil number, because the sum of its binary digits is even.

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

The square root of 13143217 is about 3625.3574996130. The cubic root of 13143217 is about 235.9937815560.

Adding to 13143217 its reverse (71234131), we get a palindrome (84377348).

The spelling of 13143217 in words is "thirteen million, one hundred forty-three thousand, two hundred seventeen".