143031 has 16 divisors (see below), whose sum is σ = 224000. Its totient is φ = 81144.

The previous prime is 142993. The next prime is 143053. The reversal of 143031 is 130341.

It is not a de Polignac number, because 143031 - 2⁷ = 142903 is a prime.

It is a super-2 number, since 2×143031² = 40915733922, which contains 22 as substring.

143031 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 142998 and 143016.

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 143031.

It is not an unprimeable number, because it can be changed into a prime (143831) 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 15 ways as a sum of consecutive naturals, for example, 960 + ... + 1098.

It is an arithmetic number, because the mean of its divisors is an integer number (14000).

2¹⁴³⁰³¹ is an apocalyptic number.

143031 is a deficient number, since it is larger than the sum of its proper divisors (80969).

143031 is an equidigital number, since it uses as much as digits as its factorization.

143031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 143031 is about 378.1943944587. The cubic root of 143031 is about 52.2969938083.

Adding to 143031 its reverse (130341), we get a palindrome (273372).

The spelling of 143031 in words is "one hundred forty-three thousand, thirty-one".