320312043 has 8 divisors (see below), whose sum is σ = 474536400. Its totient is φ = 213541344.

The previous prime is 320312033. The next prime is 320312077. The reversal of 320312043 is 340213023.

It is a de Polignac number, because none of the positive numbers 2^k-320312043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320312033) 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, 5931678 + ... + 5931731.

It is an arithmetic number, because the mean of its divisors is an integer number (59317050).

Almost surely, 2^320312043 is an apocalyptic number.

320312043 is a deficient number, since it is larger than the sum of its proper divisors (154224357).

320312043 is a wasteful number, since it uses less digits than its factorization.

320312043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11863418 (or 11863412 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 320312043 is about 17897.2635617851. The cubic root of 320312043 is about 684.2126339535.

Adding to 320312043 its reverse (340213023), we get a palindrome (660525066).

The spelling of 320312043 in words is "three hundred twenty million, three hundred twelve thousand, forty-three".