13143811 has 2 divisors, whose sum is σ = 13143812. Its totient is φ = 13143810.

The previous prime is 13143799. The next prime is 13143817. The reversal of 13143811 is 11834131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13143811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13143817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6571905 + 6571906.

It is an arithmetic number, because the mean of its divisors is an integer number (6571906).

Almost surely, 2^13143811 is an apocalyptic number.

13143811 is a deficient number, since it is larger than the sum of its proper divisors (1).

13143811 is an equidigital number, since it uses as much as digits as its factorization.

13143811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 22.

The square root of 13143811 is about 3625.4394216426. The cubic root of 13143811 is about 235.9973367027.

Adding to 13143811 its reverse (11834131), we get a palindrome (24977942).

The spelling of 13143811 in words is "thirteen million, one hundred forty-three thousand, eight hundred eleven".