13430947 has 2 divisors, whose sum is σ = 13430948. Its totient is φ = 13430946.

The previous prime is 13430939. The next prime is 13430951. The reversal of 13430947 is 74903431.

13430947 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 an emirp because it is prime and its reverse (74903431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13430947 - 2³ = 13430939 is a prime.

It is not a weakly prime, because it can be changed into another prime (13430917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6715473 + 6715474.

It is an arithmetic number, because the mean of its divisors is an integer number (6715474).

Almost surely, 2^13430947 is an apocalyptic number.

13430947 is a deficient number, since it is larger than the sum of its proper divisors (1).

13430947 is an equidigital number, since it uses as much as digits as its factorization.

13430947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 13430947 is about 3664.8256438745. The cubic root of 13430947 is about 237.7034828606.

The spelling of 13430947 in words is "thirteen million, four hundred thirty thousand, nine hundred forty-seven".