6813123 has 4 divisors (see below), whose sum is σ = 9084168. Its totient is φ = 4542080.

The previous prime is 6813113. The next prime is 6813127. The reversal of 6813123 is 3213186.

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 6813123 - 2⁵ = 6813091 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 6813093 and 6813102.

It is not an unprimeable number, because it can be changed into a prime (6813127) 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, 1135518 + ... + 1135523.

It is an arithmetic number, because the mean of its divisors is an integer number (2271042).

Almost surely, 2^6813123 is an apocalyptic number.

6813123 is a deficient number, since it is larger than the sum of its proper divisors (2271045).

6813123 is a wasteful number, since it uses less digits than its factorization.

6813123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271044.

The product of its digits is 864, while the sum is 24.

The square root of 6813123 is about 2610.1959696544. The cubic root of 6813123 is about 189.5754416820.

The spelling of 6813123 in words is "six million, eight hundred thirteen thousand, one hundred twenty-three".