13331471 has 2 divisors, whose sum is σ = 13331472. Its totient is φ = 13331470.

The previous prime is 13331453. The next prime is 13331473. The reversal of 13331471 is 17413331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13331471 is a prime.

It is a super-3 number, since 3×13331471³ (a number of 22 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 13331473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13331473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6665735 + 6665736.

It is an arithmetic number, because the mean of its divisors is an integer number (6665736).

Almost surely, 2^13331471 is an apocalyptic number.

13331471 is a deficient number, since it is larger than the sum of its proper divisors (1).

13331471 is an equidigital number, since it uses as much as digits as its factorization.

13331471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 23.

The square root of 13331471 is about 3651.2286973018. The cubic root of 13331471 is about 237.1151795837.

The spelling of 13331471 in words is "thirteen million, three hundred thirty-one thousand, four hundred seventy-one".