320312444 has 12 divisors (see below), whose sum is σ = 584918544. Its totient is φ = 153192864.

The previous prime is 320312437. The next prime is 320312449. The reversal of 320312444 is 444213023.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1740737 + ... + 1740920.

It is an arithmetic number, because the mean of its divisors is an integer number (48743212).

Almost surely, 2^320312444 is an apocalyptic number.

It is an amenable number.

320312444 is a deficient number, since it is larger than the sum of its proper divisors (264606100).

320312444 is a wasteful number, since it uses less digits than its factorization.

320312444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481684 (or 3481682 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 320312444 is about 17897.2747646115. The cubic root of 320312444 is about 684.2129194763.

Adding to 320312444 its reverse (444213023), we get a palindrome (764525467).

The spelling of 320312444 in words is "three hundred twenty million, three hundred twelve thousand, four hundred forty-four".