320343442 has 4 divisors (see below), whose sum is σ = 480515166. Its totient is φ = 160171720.

The previous prime is 320343433. The next prime is 320343449. The reversal of 320343442 is 244343023.

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

It can be written as a sum of positive squares in only one way, i.e., 247086961 + 73256481 = 15719^2 + 8559^2 .

It is not an unprimeable number, because it can be changed into a prime (320343449) by changing a digit.

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 as a sum of consecutive naturals, namely, 80085859 + ... + 80085862.

Almost surely, 2^320343442 is an apocalyptic number.

320343442 is a deficient number, since it is larger than the sum of its proper divisors (160171724).

320343442 is a wasteful number, since it uses less digits than its factorization.

320343442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160171723.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 320343442 is about 17898.1407414290. The cubic root of 320343442 is about 684.2349901642.

Adding to 320343442 its reverse (244343023), we get a palindrome (564686465).

The spelling of 320343442 in words is "three hundred twenty million, three hundred forty-three thousand, four hundred forty-two".