320312447 has 8 divisors (see below), whose sum is σ = 394230816. Its totient is φ = 253433952.

The previous prime is 320312437. The next prime is 320312449. The reversal of 320312447 is 744213023.

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

It is a cyclic number.

It is not a de Polignac number, because 320312447 - 2¹⁶ = 320246911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320312449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1759868 + ... + 1760049.

It is an arithmetic number, because the mean of its divisors is an integer number (49278852).

Almost surely, 2^320312447 is an apocalyptic number.

320312447 is a deficient number, since it is larger than the sum of its proper divisors (73918369).

320312447 is a wasteful number, since it uses less digits than its factorization.

320312447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519937.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 320312447 is about 17897.2748484232. The cubic root of 320312447 is about 684.2129216124.

The spelling of 320312447 in words is "three hundred twenty million, three hundred twelve thousand, four hundred forty-seven".