13147243 has 2 divisors, whose sum is σ = 13147244. Its totient is φ = 13147242.

The previous prime is 13147223. The next prime is 13147249. The reversal of 13147243 is 34274131.

13147243 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-13147243 is a prime.

It is not a weakly prime, because it can be changed into another prime (13147249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6573621 + 6573622.

It is an arithmetic number, because the mean of its divisors is an integer number (6573622).

Almost surely, 2^13147243 is an apocalyptic number.

13147243 is a deficient number, since it is larger than the sum of its proper divisors (1).

13147243 is an equidigital number, since it uses as much as digits as its factorization.

13147243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 25.

The square root of 13147243 is about 3625.9127126835. The cubic root of 13147243 is about 236.0178754534.

It can be divided in two parts, 131 and 47243, that added together give a palindrome (47374).

The spelling of 13147243 in words is "thirteen million, one hundred forty-seven thousand, two hundred forty-three".