16319971 has 2 divisors, whose sum is σ = 16319972. Its totient is φ = 16319970.

The previous prime is 16319969. The next prime is 16319977. The reversal of 16319971 is 17991361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16319971 - 2¹ = 16319969 is a prime.

Together with 16319969, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16319971.

It is not a weakly prime, because it can be changed into another prime (16319977) 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, 8159985 + 8159986.

It is an arithmetic number, because the mean of its divisors is an integer number (8159986).

Almost surely, 2^16319971 is an apocalyptic number.

16319971 is a deficient number, since it is larger than the sum of its proper divisors (1).

16319971 is an equidigital number, since it uses as much as digits as its factorization.

16319971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 37.

The square root of 16319971 is about 4039.7983860584. The cubic root of 16319971 is about 253.6528779715.

The spelling of 16319971 in words is "sixteen million, three hundred nineteen thousand, nine hundred seventy-one".