143181 has 8 divisors (see below), whose sum is σ = 212160. Its totient is φ = 95436.

The previous prime is 143177. The next prime is 143197. The reversal of 143181 is 181341.

It is not a de Polignac number, because 143181 - 2² = 143177 is a prime.

It is a super-2 number, since 2×143181² = 41001597522, which contains 22 as substring.

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 143181.

It is not an unprimeable number, because it can be changed into a prime (143111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2625 + ... + 2678.

It is an arithmetic number, because the mean of its divisors is an integer number (26520).

2¹⁴³¹⁸¹ is an apocalyptic number.

It is an amenable number.

143181 is a deficient number, since it is larger than the sum of its proper divisors (68979).

143181 is an equidigital number, since it uses as much as digits as its factorization.

143181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5312 (or 5306 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 143181 is about 378.3926532056. The cubic root of 143181 is about 52.3152691203.

It can be divided in two parts, 143 and 181, that added together give a square (324 = 18²).

The spelling of 143181 in words is "one hundred forty-three thousand, one hundred eighty-one".