13287811 has 2 divisors, whose sum is σ = 13287812. Its totient is φ = 13287810.

The previous prime is 13287797. The next prime is 13287823. The reversal of 13287811 is 11878231.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13287811 - 2⁵ = 13287779 is a prime.

It is not a weakly prime, because it can be changed into another prime (13287311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6643905 + 6643906.

It is an arithmetic number, because the mean of its divisors is an integer number (6643906).

Almost surely, 2^13287811 is an apocalyptic number.

13287811 is a deficient number, since it is larger than the sum of its proper divisors (1).

13287811 is an equidigital number, since it uses as much as digits as its factorization.

13287811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 31.

The square root of 13287811 is about 3645.2449849084. The cubic root of 13287811 is about 236.8560491240.

The spelling of 13287811 in words is "thirteen million, two hundred eighty-seven thousand, eight hundred eleven".