12803811 has 4 divisors (see below), whose sum is σ = 17071752. Its totient is φ = 8535872.

The previous prime is 12803803. The next prime is 12803851. The reversal of 12803811 is 11830821.

12803811 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12803811 - 2³ = 12803803 is a prime.

It is a super-2 number, since 2×12803811² = 327875152247442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12803851) 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, 2133966 + ... + 2133971.

It is an arithmetic number, because the mean of its divisors is an integer number (4267938).

Almost surely, 2^12803811 is an apocalyptic number.

12803811 is a deficient number, since it is larger than the sum of its proper divisors (4267941).

12803811 is an equidigital number, since it uses as much as digits as its factorization.

12803811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267940.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 12803811 is about 3578.2413278034. The cubic root of 12803811 is about 233.9446322359.

The spelling of 12803811 in words is "twelve million, eight hundred three thousand, eight hundred eleven".