6381143 has 8 divisors (see below), whose sum is σ = 6801408. Its totient is φ = 5972824.

The previous prime is 6381139. The next prime is 6381191. The reversal of 6381143 is 3411836.

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

It is not a de Polignac number, because 6381143 - 2² = 6381139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6381343) 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, 1871 + ... + 4032.

It is an arithmetic number, because the mean of its divisors is an integer number (850176).

Almost surely, 2^6381143 is an apocalyptic number.

6381143 is a deficient number, since it is larger than the sum of its proper divisors (420265).

6381143 is a wasteful number, since it uses less digits than its factorization.

6381143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973.

The product of its digits is 1728, while the sum is 26.

The square root of 6381143 is about 2526.0924369468. The cubic root of 6381143 is about 185.4810272103.

Adding to 6381143 its reverse (3411836), we get a palindrome (9792979).

The spelling of 6381143 in words is "six million, three hundred eighty-one thousand, one hundred forty-three".