12803881 has 4 divisors (see below), whose sum is σ = 13076352. Its totient is φ = 12531412.

The previous prime is 12803867. The next prime is 12803897. The reversal of 12803881 is 18830821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18830821 = 431 ⋅43691.

It is a cyclic number.

It is not a de Polignac number, because 12803881 - 2¹³ = 12795689 is a prime.

It is a super-2 number, since 2×12803881² = 327878737324322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12803851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136165 + ... + 136258.

It is an arithmetic number, because the mean of its divisors is an integer number (3269088).

Almost surely, 2^12803881 is an apocalyptic number.

It is an amenable number.

12803881 is a deficient number, since it is larger than the sum of its proper divisors (272471).

12803881 is an equidigital number, since it uses as much as digits as its factorization.

12803881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272470.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 12803881 is about 3578.2511091314. The cubic root of 12803881 is about 233.9450585698.

The spelling of 12803881 in words is "twelve million, eight hundred three thousand, eight hundred eighty-one".