12816319 has 8 divisors (see below), whose sum is σ = 13302128. Its totient is φ = 12337920.

The previous prime is 12816277. The next prime is 12816337. The reversal of 12816319 is 91361821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12816319 - 2⁷ = 12816191 is a prime.

It is a super-2 number, since 2×12816319² = 328516065419522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12816389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1804 + ... + 5374.

It is an arithmetic number, because the mean of its divisors is an integer number (1662766).

Almost surely, 2^12816319 is an apocalyptic number.

12816319 is a deficient number, since it is larger than the sum of its proper divisors (485809).

12816319 is an equidigital number, since it uses as much as digits as its factorization.

12816319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3705.

The product of its digits is 2592, while the sum is 31.

The square root of 12816319 is about 3579.9886871330. The cubic root of 12816319 is about 234.0207873514.

The spelling of 12816319 in words is "twelve million, eight hundred sixteen thousand, three hundred nineteen".