143643413 has 4 divisors (see below), whose sum is σ = 144002028. Its totient is φ = 143284800.

The previous prime is 143643407. The next prime is 143643427. The reversal of 143643413 is 314346341.

143643413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72965764 + 70677649 = 8542^2 + 8407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143643413 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 (143643473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178706 + ... + 179507.

It is an arithmetic number, because the mean of its divisors is an integer number (36000507).

Almost surely, 2^143643413 is an apocalyptic number.

It is an amenable number.

143643413 is a deficient number, since it is larger than the sum of its proper divisors (358615).

143643413 is an equidigital number, since it uses as much as digits as its factorization.

143643413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358614.

The product of its digits is 10368, while the sum is 29.

The square root of 143643413 is about 11985.1329988449. The cubic root of 143643413 is about 523.7152720085.

Adding to 143643413 its reverse (314346341), we get a palindrome (457989754).

The spelling of 143643413 in words is "one hundred forty-three million, six hundred forty-three thousand, four hundred thirteen".