331143 has 16 divisors (see below), whose sum is σ = 481536. Its totient is φ = 201600.

The previous prime is 331141. The next prime is 331147. The reversal of 331143 is 341133.

331143 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 331143 - 2¹ = 331141 is a prime.

It is a super-3 number, since 3×331143³ = 108935138933343621, which contains 333 as substring.

331143 is strictly pandigital in base 7.

331143 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 331143.

It is not an unprimeable number, because it can be changed into a prime (331141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2118 + ... + 2268.

It is an arithmetic number, because the mean of its divisors is an integer number (30096).

2³³¹¹⁴³ is an apocalyptic number.

331143 is a deficient number, since it is larger than the sum of its proper divisors (150393).

331143 is a wasteful number, since it uses less digits than its factorization.

331143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214.

The product of its digits is 108, while the sum is 15.

The square root of 331143 is about 575.4502584933. The cubic root of 331143 is about 69.1839243400.

Adding to 331143 its reverse (341133), we get a palindrome (672276).

It can be divided in two parts, 331 and 143, that added together give a palindrome (474).

The spelling of 331143 in words is "three hundred thirty-one thousand, one hundred forty-three".