6818131 has 8 divisors (see below), whose sum is σ = 7211600. Its totient is φ = 6428160.

The previous prime is 6818117. The next prime is 6818137. The reversal of 6818131 is 1318186.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6818131 - 2⁹ = 6817619 is a prime.

It is a super-3 number, since 3×6818131³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6818131.

It is not an unprimeable number, because it can be changed into a prime (6818137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3835 + ... + 5323.

It is an arithmetic number, because the mean of its divisors is an integer number (901450).

Almost surely, 2^6818131 is an apocalyptic number.

6818131 is a deficient number, since it is larger than the sum of its proper divisors (393469).

6818131 is a wasteful number, since it uses less digits than its factorization.

6818131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749.

The product of its digits is 1152, while the sum is 28.

The square root of 6818131 is about 2611.1551083764. The cubic root of 6818131 is about 189.6218795779.

Subtracting from 6818131 its reverse (1318186), we obtain a palindrome (5499945).

The spelling of 6818131 in words is "six million, eight hundred eighteen thousand, one hundred thirty-one".