13997351 has 2 divisors, whose sum is σ = 13997352. Its totient is φ = 13997350.

The previous prime is 13997339. The next prime is 13997371. The reversal of 13997351 is 15379931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13997351 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13997371) 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, 6998675 + 6998676.

It is an arithmetic number, because the mean of its divisors is an integer number (6998676).

Almost surely, 2^13997351 is an apocalyptic number.

13997351 is a deficient number, since it is larger than the sum of its proper divisors (1).

13997351 is an equidigital number, since it uses as much as digits as its factorization.

13997351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25515, while the sum is 38.

The square root of 13997351 is about 3741.3033825126. The cubic root of 13997351 is about 240.9990243471. Note that the first 3 decimals are identical.

The spelling of 13997351 in words is "thirteen million, nine hundred ninety-seven thousand, three hundred fifty-one".