13713247 has 2 divisors, whose sum is σ = 13713248. Its totient is φ = 13713246.

The previous prime is 13713239. The next prime is 13713251. The reversal of 13713247 is 74231731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13713247 - 2³ = 13713239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13713277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6856623 + 6856624.

It is an arithmetic number, because the mean of its divisors is an integer number (6856624).

Almost surely, 2^13713247 is an apocalyptic number.

13713247 is a deficient number, since it is larger than the sum of its proper divisors (1).

13713247 is an equidigital number, since it uses as much as digits as its factorization.

13713247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 28.

The square root of 13713247 is about 3703.1401539774. The cubic root of 13713247 is about 239.3573489883.

Adding to 13713247 its reverse (74231731), we get a palindrome (87944978).

The spelling of 13713247 in words is "thirteen million, seven hundred thirteen thousand, two hundred forty-seven".