14316821 has 2 divisors, whose sum is σ = 14316822. Its totient is φ = 14316820.

The previous prime is 14316781. The next prime is 14316847. The reversal of 14316821 is 12861341.

It is an a-pointer prime, because the next prime (14316847) can be obtained adding 14316821 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7214596 + 7102225 = 2686^2 + 2665^2 .

It is an emirp because it is prime and its reverse (12861341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14316821 - 2¹⁴ = 14300437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14316871) 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, 7158410 + 7158411.

It is an arithmetic number, because the mean of its divisors is an integer number (7158411).

Almost surely, 2^14316821 is an apocalyptic number.

It is an amenable number.

14316821 is a deficient number, since it is larger than the sum of its proper divisors (1).

14316821 is an equidigital number, since it uses as much as digits as its factorization.

14316821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 26.

The square root of 14316821 is about 3783.7575239436. The cubic root of 14316821 is about 242.8187384156.

The spelling of 14316821 in words is "fourteen million, three hundred sixteen thousand, eight hundred twenty-one".