12813407 has 4 divisors (see below), whose sum is σ = 12898416. Its totient is φ = 12728400.

The previous prime is 12813403. The next prime is 12813413. The reversal of 12813407 is 70431821.

12813407 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.

It is a cyclic number.

It is not a de Polignac number, because 12813407 - 2² = 12813403 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 (12813403) 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, 42278 + ... + 42579.

It is an arithmetic number, because the mean of its divisors is an integer number (3224604).

Almost surely, 2^12813407 is an apocalyptic number.

12813407 is a deficient number, since it is larger than the sum of its proper divisors (85009).

12813407 is an equidigital number, since it uses as much as digits as its factorization.

12813407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85008.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 12813407 is about 3579.5819588326. The cubic root of 12813407 is about 234.0030620292.

The spelling of 12813407 in words is "twelve million, eight hundred thirteen thousand, four hundred seven".