12943613 has 4 divisors (see below), whose sum is σ = 13705020. Its totient is φ = 12182208.

The previous prime is 12943603. The next prime is 12943621. The reversal of 12943613 is 31634921.

12943613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31634921 = 67 ⋅472163.

It can be written as a sum of positive squares in 2 ways, for example, as 11648569 + 1295044 = 3413^2 + 1138^2 .

It is a cyclic number.

It is not a de Polignac number, because 12943613 - 2²² = 8749309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12943603) 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, 380678 + ... + 380711.

It is an arithmetic number, because the mean of its divisors is an integer number (3426255).

Almost surely, 2^12943613 is an apocalyptic number.

It is an amenable number.

12943613 is a deficient number, since it is larger than the sum of its proper divisors (761407).

12943613 is an equidigital number, since it uses as much as digits as its factorization.

12943613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761406.

The product of its digits is 3888, while the sum is 29.

The square root of 12943613 is about 3597.7233078712. The cubic root of 12943613 is about 234.7930152695.

The spelling of 12943613 in words is "twelve million, nine hundred forty-three thousand, six hundred thirteen".