6818231 has 4 divisors (see below), whose sum is σ = 7792272. Its totient is φ = 5844192.

The previous prime is 6818221. The next prime is 6818239. The reversal of 6818231 is 1328186.

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 6818231 - 2⁶ = 6818167 is a prime.

It is a super-2 number, since 2×6818231² = 92976547938722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6818194 and 6818203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6818239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487010 + ... + 487023.

It is an arithmetic number, because the mean of its divisors is an integer number (1948068).

Almost surely, 2^6818231 is an apocalyptic number.

6818231 is a deficient number, since it is larger than the sum of its proper divisors (974041).

6818231 is an equidigital number, since it uses as much as digits as its factorization.

6818231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974040.

The product of its digits is 2304, while the sum is 29.

The square root of 6818231 is about 2611.1742569197. The cubic root of 6818231 is about 189.6228066205.

The spelling of 6818231 in words is "six million, eight hundred eighteen thousand, two hundred thirty-one".