12823911 has 12 divisors (see below), whose sum is σ = 18607992. Its totient is φ = 8510256.

The previous prime is 12823907. The next prime is 12823913. The reversal of 12823911 is 11932821.

It is not a de Polignac number, because 12823911 - 2² = 12823907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12823913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1096 + ... + 5181.

It is an arithmetic number, because the mean of its divisors is an integer number (1550666).

Almost surely, 2^12823911 is an apocalyptic number.

12823911 is a deficient number, since it is larger than the sum of its proper divisors (5784081).

12823911 is a wasteful number, since it uses less digits than its factorization.

12823911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510 (or 6507 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 12823911 is about 3581.0488686975. The cubic root of 12823911 is about 234.0669871772.

The spelling of 12823911 in words is "twelve million, eight hundred twenty-three thousand, nine hundred eleven".