143331 has 4 divisors (see below), whose sum is σ = 191112. Its totient is φ = 95552.

The previous prime is 143329. The next prime is 143333. The reversal of 143331 is 133341.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (143329) and next prime (143333).

It is a cyclic number.

It is not a de Polignac number, because 143331 - 2¹ = 143329 is a prime.

It is a super-2 number, since 2×143331² = 41087551122, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 143331.

It is not an unprimeable number, because it can be changed into a prime (143333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23886 + ... + 23891.

It is an arithmetic number, because the mean of its divisors is an integer number (47778).

2¹⁴³³³¹ is an apocalyptic number.

143331 is a deficient number, since it is larger than the sum of its proper divisors (47781).

143331 is an equidigital number, since it uses as much as digits as its factorization.

143331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47780.

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

The square root of 143331 is about 378.5908081293. The cubic root of 143331 is about 52.3335316728. Note that the first 3 decimals are identical.

Adding to 143331 its reverse (133341), we get a palindrome (276672).

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

The spelling of 143331 in words is "one hundred forty-three thousand, three hundred thirty-one".