12828311 has 4 divisors (see below), whose sum is σ = 13045800. Its totient is φ = 12610824.

The previous prime is 12828293. The next prime is 12828317. The reversal of 12828311 is 11382821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12828311 - 2¹⁴ = 12811927 is a prime.

It is a super-3 number, since 3×12828311³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12828317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108656 + ... + 108773.

It is an arithmetic number, because the mean of its divisors is an integer number (3261450).

Almost surely, 2^12828311 is an apocalyptic number.

12828311 is a deficient number, since it is larger than the sum of its proper divisors (217489).

12828311 is an equidigital number, since it uses as much as digits as its factorization.

12828311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217488.

The product of its digits is 768, while the sum is 26.

The square root of 12828311 is about 3581.6631611585. The cubic root of 12828311 is about 234.0937542838.

The spelling of 12828311 in words is "twelve million, eight hundred twenty-eight thousand, three hundred eleven".