16310891 has 2 divisors, whose sum is σ = 16310892. Its totient is φ = 16310890.

The previous prime is 16310863. The next prime is 16310923. The reversal of 16310891 is 19801361.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16310891 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16310831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8155445 + 8155446.

It is an arithmetic number, because the mean of its divisors is an integer number (8155446).

Almost surely, 2^16310891 is an apocalyptic number.

16310891 is a deficient number, since it is larger than the sum of its proper divisors (1).

16310891 is an equidigital number, since it uses as much as digits as its factorization.

16310891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 16310891 is about 4038.6744112394. The cubic root of 16310891 is about 253.6058273281.

The spelling of 16310891 in words is "sixteen million, three hundred ten thousand, eight hundred ninety-one".