12813193 has 4 divisors (see below), whose sum is σ = 12821908. Its totient is φ = 12804480.

The previous prime is 12813181. The next prime is 12813217. The reversal of 12813193 is 39131821.

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 can be written as a sum of positive squares in 2 ways, for example, as 4210704 + 8602489 = 2052^2 + 2933^2 .

It is a cyclic number.

It is not a de Polignac number, because 12813193 - 2⁵ = 12813161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12813173) 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, 1548 + ... + 5293.

It is an arithmetic number, because the mean of its divisors is an integer number (3205477).

Almost surely, 2^12813193 is an apocalyptic number.

It is an amenable number.

12813193 is a deficient number, since it is larger than the sum of its proper divisors (8715).

12813193 is an equidigital number, since it uses as much as digits as its factorization.

12813193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8714.

The product of its digits is 1296, while the sum is 28.

The square root of 12813193 is about 3579.5520669492. The cubic root of 12813193 is about 234.0017593069.

The spelling of 12813193 in words is "twelve million, eight hundred thirteen thousand, one hundred ninety-three".