320143441 has 4 divisors (see below), whose sum is σ = 331182900. Its totient is φ = 309103984.

The previous prime is 320143429. The next prime is 320143459. The reversal of 320143441 is 144341023.

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 67174416 + 252969025 = 8196^2 + 15905^2 .

It is a cyclic number.

It is not a de Polignac number, because 320143441 - 2¹⁵ = 320110673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320143741) 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, 5519686 + ... + 5519743.

It is an arithmetic number, because the mean of its divisors is an integer number (82795725).

Almost surely, 2^320143441 is an apocalyptic number.

It is an amenable number.

320143441 is a deficient number, since it is larger than the sum of its proper divisors (11039459).

320143441 is a wasteful number, since it uses less digits than its factorization.

320143441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11039458.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 320143441 is about 17892.5526686384. The cubic root of 320143441 is about 684.0925636789.

Adding to 320143441 its reverse (144341023), we get a palindrome (464484464).

The spelling of 320143441 in words is "three hundred twenty million, one hundred forty-three thousand, four hundred forty-one".