12813165 has 12 divisors (see below), whose sum is σ = 22209564. Its totient is φ = 6833664.

The previous prime is 12813161. The next prime is 12813167. The reversal of 12813165 is 56131821.

12813165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7518564 + 5294601 = 2742^2 + 2301^2 .

It is not a de Polignac number, because 12813165 - 2² = 12813161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12813161) 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, 142324 + ... + 142413.

It is an arithmetic number, because the mean of its divisors is an integer number (1850797).

Almost surely, 2^12813165 is an apocalyptic number.

12813165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12813165 is a deficient number, since it is larger than the sum of its proper divisors (9396399).

12813165 is a wasteful number, since it uses less digits than its factorization.

12813165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284748 (or 284745 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 12813165 is about 3579.5481558431. The cubic root of 12813165 is about 234.0015888562.

Adding to 12813165 its reverse (56131821), we get a palindrome (68944986).

The spelling of 12813165 in words is "twelve million, eight hundred thirteen thousand, one hundred sixty-five".