320312214 has 48 divisors (see below), whose sum is σ = 726197472. Its totient is φ = 101844864.

The previous prime is 320312177. The next prime is 320312227. The reversal of 320312214 is 412213023.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188352 + ... + 190044.

It is an arithmetic number, because the mean of its divisors is an integer number (15129114).

Almost surely, 2^320312214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320312214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363098736).

320312214 is an abundant number, since it is smaller than the sum of its proper divisors (405885258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320312214 is a wasteful number, since it uses less digits than its factorization.

320312214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181 (or 2178 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 320312214 is about 17897.2683390511. The cubic root of 320312214 is about 684.2127557102.

Adding to 320312214 its reverse (412213023), we get a palindrome (732525237).

The spelling of 320312214 in words is "three hundred twenty million, three hundred twelve thousand, two hundred fourteen".