6631331 has 8 divisors (see below), whose sum is σ = 7755264. Its totient is φ = 5551560.

The previous prime is 6631327. The next prime is 6631333. The reversal of 6631331 is 1331366.

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

It is not a de Polignac number, because 6631331 - 2² = 6631327 is a prime.

It is a super-2 number, since 2×6631331² = 87949101663122, 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 = 6631297 and 6631306.

It is not an unprimeable number, because it can be changed into a prime (6631333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10715 + ... + 11316.

It is an arithmetic number, because the mean of its divisors is an integer number (969408).

Almost surely, 2^6631331 is an apocalyptic number.

6631331 is a deficient number, since it is larger than the sum of its proper divisors (1123933).

6631331 is a wasteful number, since it uses less digits than its factorization.

6631331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22081.

The product of its digits is 972, while the sum is 23.

The square root of 6631331 is about 2575.1370837297. The cubic root of 6631331 is about 187.8740951925.

Adding to 6631331 its reverse (1331366), we get a palindrome (7962697).

The spelling of 6631331 in words is "six million, six hundred thirty-one thousand, three hundred thirty-one".