143218 has 8 divisors (see below), whose sum is σ = 217260. Its totient is φ = 70800.

The previous prime is 143197. The next prime is 143239. The reversal of 143218 is 812341.

It is an interprime number because it is at equal distance from previous prime (143197) and next prime (143239).

It can be written as a sum of positive squares in 2 ways, for example, as 142129 + 1089 = 377^2 + 33^2 .

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

It is a super-2 number, since 2×143218² = 41022791048, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 143195 and 143204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153 + ... + 556.

2¹⁴³²¹⁸ is an apocalyptic number.

143218 is a deficient number, since it is larger than the sum of its proper divisors (74042).

143218 is a wasteful number, since it uses less digits than its factorization.

143218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812.

The product of its digits is 192, while the sum is 19.

The square root of 143218 is about 378.4415410602. The cubic root of 143218 is about 52.3197750678.

Adding to 143218 its reverse (812341), we get a palindrome (955559).

It can be divided in two parts, 143 and 218, that added together give a square (361 = 19²).

The spelling of 143218 in words is "one hundred forty-three thousand, two hundred eighteen".