143381165 has 8 divisors (see below), whose sum is σ = 175304088. Its totient is φ = 112540480.

The previous prime is 143381143. The next prime is 143381167. The reversal of 143381165 is 561183341.

143381165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1223236 + 142157929 = 1106^2 + 11923^2 .

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

It is not a de Polignac number, because 143381165 - 2¹⁶ = 143315629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143381167) 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, 270266 + ... + 270795.

It is an arithmetic number, because the mean of its divisors is an integer number (21913011).

Almost surely, 2^143381165 is an apocalyptic number.

It is an amenable number.

143381165 is a deficient number, since it is larger than the sum of its proper divisors (31922923).

143381165 is an equidigital number, since it uses as much as digits as its factorization.

143381165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541119.

The product of its digits is 8640, while the sum is 32.

The square root of 143381165 is about 11974.1874463364. The cubic root of 143381165 is about 523.3963643592.

The spelling of 143381165 in words is "one hundred forty-three million, three hundred eighty-one thousand, one hundred sixty-five".