6381331 has 8 divisors (see below), whose sum is σ = 7110144. Its totient is φ = 5677320.

The previous prime is 6381317. The next prime is 6381337. The reversal of 6381331 is 1331836.

It is a happy number.

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

It is not a de Polignac number, because 6381331 - 2⁵ = 6381299 is a prime.

It is a super-2 number, since 2×6381331² = 81442770663122, 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 = 6381296 and 6381305.

It is not an unprimeable number, because it can be changed into a prime (6381337) 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, 5655 + ... + 6688.

It is an arithmetic number, because the mean of its divisors is an integer number (888768).

Almost surely, 2^6381331 is an apocalyptic number.

6381331 is a deficient number, since it is larger than the sum of its proper divisors (728813).

6381331 is a wasteful number, since it uses less digits than its factorization.

6381331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12401.

The product of its digits is 1296, while the sum is 25.

The square root of 6381331 is about 2526.1296482960. The cubic root of 6381331 is about 185.4828487277.

The spelling of 6381331 in words is "six million, three hundred eighty-one thousand, three hundred thirty-one".