12813487 has 2 divisors, whose sum is σ = 12813488. Its totient is φ = 12813486.

The previous prime is 12813413. The next prime is 12813497. The reversal of 12813487 is 78431821.

It is a happy number.

12813487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12813487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12813497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6406743 + 6406744.

It is an arithmetic number, because the mean of its divisors is an integer number (6406744).

Almost surely, 2^12813487 is an apocalyptic number.

12813487 is a deficient number, since it is larger than the sum of its proper divisors (1).

12813487 is an equidigital number, since it uses as much as digits as its factorization.

12813487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 34.

The square root of 12813487 is about 3579.5931333044. The cubic root of 12813487 is about 234.0035490245.

The spelling of 12813487 in words is "twelve million, eight hundred thirteen thousand, four hundred eighty-seven".