143231 has 8 divisors (see below), whose sum is σ = 162000. Its totient is φ = 125440.

The previous prime is 143197. The next prime is 143239. The reversal of 143231 is 132341.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143231 is a prime.

It is a super-2 number, since 2×143231² = 41030238722, which contains 22 as substring.

It is a Duffinian 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 143231.

It is not an unprimeable number, because it can be changed into a prime (143239) 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, 95 + ... + 543.

It is an arithmetic number, because the mean of its divisors is an integer number (20250).

2¹⁴³²³¹ is an apocalyptic number.

143231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

143231 is a deficient number, since it is larger than the sum of its proper divisors (18769).

143231 is a wasteful number, since it uses less digits than its factorization.

143231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its digits is 72, while the sum is 14.

The square root of 143231 is about 378.4587163747. The cubic root of 143231 is about 52.3213580544.

Adding to 143231 its reverse (132341), we get a palindrome (275572).

It can be divided in two parts, 143 and 231, that multiplied together give a palindrome (33033).

The spelling of 143231 in words is "one hundred forty-three thousand, two hundred thirty-one".