13023847 has 2 divisors, whose sum is σ = 13023848. Its totient is φ = 13023846.

The previous prime is 13023809. The next prime is 13023851. The reversal of 13023847 is 74832031.

It is a strong prime.

It is an emirp because it is prime and its reverse (74832031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13023847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13023877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6511923 + 6511924.

It is an arithmetic number, because the mean of its divisors is an integer number (6511924).

Almost surely, 2^13023847 is an apocalyptic number.

13023847 is a deficient number, since it is larger than the sum of its proper divisors (1).

13023847 is an equidigital number, since it uses as much as digits as its factorization.

13023847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 13023847 is about 3608.8567441781. The cubic root of 13023847 is about 235.2771560212.

Adding to 13023847 its reverse (74832031), we get a palindrome (87855878).

The spelling of 13023847 in words is "thirteen million, twenty-three thousand, eight hundred forty-seven".