16393313 has 2 divisors, whose sum is σ = 16393314. Its totient is φ = 16393312.

The previous prime is 16393309. The next prime is 16393343. The reversal of 16393313 is 31339361.

16393313 is nontrivially palindromic in base 12.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9778129 + 6615184 = 3127^2 + 2572^2 .

It is a cyclic number.

It is not a de Polignac number, because 16393313 - 2² = 16393309 is a prime.

It is a super-2 number, since 2×16393313² = 537481422231938, which contains 22 as substring.

It is equal to p_1054748 and since 16393313 and 1054748 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (16393303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8196656 + 8196657.

It is an arithmetic number, because the mean of its divisors is an integer number (8196657).

Almost surely, 2^16393313 is an apocalyptic number.

It is an amenable number.

16393313 is a deficient number, since it is larger than the sum of its proper divisors (1).

16393313 is an equidigital number, since it uses as much as digits as its factorization.

16393313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4374, while the sum is 29.

The square root of 16393313 is about 4048.8656436093. The cubic root of 16393313 is about 254.0322824614.

The spelling of 16393313 in words is "sixteen million, three hundred ninety-three thousand, three hundred thirteen".