16313309 has 2 divisors, whose sum is σ = 16313310. Its totient is φ = 16313308.

The previous prime is 16313293. The next prime is 16313333. The reversal of 16313309 is 90331361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15382084 + 931225 = 3922^2 + 965^2 .

It is a cyclic number.

It is not a de Polignac number, because 16313309 - 2⁴ = 16313293 is a prime.

It is a super-2 number, since 2×16313309² = 532248101058962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16313369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8156654 + 8156655.

It is an arithmetic number, because the mean of its divisors is an integer number (8156655).

Almost surely, 2^16313309 is an apocalyptic number.

It is an amenable number.

16313309 is a deficient number, since it is larger than the sum of its proper divisors (1).

16313309 is an equidigital number, since it uses as much as digits as its factorization.

16313309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 16313309 is about 4038.9737557949. The cubic root of 16313309 is about 253.6183585992.

The spelling of 16313309 in words is "sixteen million, three hundred thirteen thousand, three hundred nine".