12811113 has 12 divisors (see below), whose sum is σ = 21148608. Its totient is φ = 7320600.

The previous prime is 12811109. The next prime is 12811151. The reversal of 12811113 is 31111821.

It is a happy number.

It is not a de Polignac number, because 12811113 - 2² = 12811109 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12811103) 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, 101613 + ... + 101738.

It is an arithmetic number, because the mean of its divisors is an integer number (1762384).

Almost surely, 2^12811113 is an apocalyptic number.

It is an amenable number.

12811113 is a deficient number, since it is larger than the sum of its proper divisors (8337495).

12811113 is a wasteful number, since it uses less digits than its factorization.

12811113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203364 (or 203361 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

The square root of 12811113 is about 3579.2615160114. The cubic root of 12811113 is about 233.9890965772.

Adding to 12811113 its reverse (31111821), we get a palindrome (43922934).

The spelling of 12811113 in words is "twelve million, eight hundred eleven thousand, one hundred thirteen".