12936811 has 4 divisors (see below), whose sum is σ = 12945592. Its totient is φ = 12928032.

The previous prime is 12936769. The next prime is 12936817. The reversal of 12936811 is 11863921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12936811 - 2¹⁷ = 12805739 is a prime.

It is a super-2 number, since 2×12936811² = 334722157699442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12936817) 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, 1581 + ... + 5326.

It is an arithmetic number, because the mean of its divisors is an integer number (3236398).

Almost surely, 2^12936811 is an apocalyptic number.

12936811 is a deficient number, since it is larger than the sum of its proper divisors (8781).

12936811 is an equidigital number, since it uses as much as digits as its factorization.

12936811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8780.

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

The square root of 12936811 is about 3596.7778635885. Note that the first 3 decimals coincide. The cubic root of 12936811 is about 234.7518793587.

The spelling of 12936811 in words is "twelve million, nine hundred thirty-six thousand, eight hundred eleven".