143345 has 4 divisors (see below), whose sum is σ = 172020. Its totient is φ = 114672.

The previous prime is 143333. The next prime is 143357. The reversal of 143345 is 543341.

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 (143333) and next prime (143357).

It can be written as a sum of positive squares in 2 ways, for example, as 85264 + 58081 = 292^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 143345 - 2⁴ = 143329 is a prime.

It is a nialpdrome in base 11.

It is an unprimeable number.

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, 14330 + ... + 14339.

It is an arithmetic number, because the mean of its divisors is an integer number (43005).

2¹⁴³³⁴⁵ is an apocalyptic number.

It is an amenable number.

143345 is a deficient number, since it is larger than the sum of its proper divisors (28675).

143345 is an equidigital number, since it uses as much as digits as its factorization.

143345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28674.

The product of its digits is 720, while the sum is 20.

The square root of 143345 is about 378.6092972974. The cubic root of 143345 is about 52.3352355275.

Adding to 143345 its reverse (543341), we get a palindrome (686686).

The spelling of 143345 in words is "one hundred forty-three thousand, three hundred forty-five".