13811263 has 2 divisors, whose sum is σ = 13811264. Its totient is φ = 13811262.

The previous prime is 13811261. The next prime is 13811269. The reversal of 13811263 is 36211831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13811263 - 2¹ = 13811261 is a prime.

Together with 13811261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13811261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6905631 + 6905632.

It is an arithmetic number, because the mean of its divisors is an integer number (6905632).

Almost surely, 2^13811263 is an apocalyptic number.

13811263 is a deficient number, since it is larger than the sum of its proper divisors (1).

13811263 is an equidigital number, since it uses as much as digits as its factorization.

13811263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 13811263 is about 3716.3507638542. The cubic root of 13811263 is about 239.9262678598.

The spelling of 13811263 in words is "thirteen million, eight hundred eleven thousand, two hundred sixty-three".