14309681 has 2 divisors, whose sum is σ = 14309682. Its totient is φ = 14309680.

The previous prime is 14309671. The next prime is 14309689. The reversal of 14309681 is 18690341.

It is a happy number.

14309681 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 can be written as a sum of positive squares in only one way, i.e., 11669056 + 2640625 = 3416^2 + 1625^2 .

It is an emirp because it is prime and its reverse (18690341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14309681 is a prime.

It is a super-2 number, since 2×14309681² = 409533940643522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14309689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7154840 + 7154841.

It is an arithmetic number, because the mean of its divisors is an integer number (7154841).

Almost surely, 2^14309681 is an apocalyptic number.

It is an amenable number.

14309681 is a deficient number, since it is larger than the sum of its proper divisors (1).

14309681 is an equidigital number, since it uses as much as digits as its factorization.

14309681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 14309681 is about 3782.8138997313. The cubic root of 14309681 is about 242.7783659967.

It can be divided in two parts, 1430 and 9681, that added together give a palindrome (11111).

The spelling of 14309681 in words is "fourteen million, three hundred nine thousand, six hundred eighty-one".