312224320 has 28 divisors (see below), whose sum is σ = 743484924. Its totient is φ = 124889600.

The previous prime is 312224309. The next prime is 312224323. The reversal of 312224320 is 23422213.

It can be written as a sum of positive squares in 2 ways, for example, as 230068224 + 82156096 = 15168^2 + 9064^2 .

It is not an unprimeable number, because it can be changed into a prime (312224323) 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, 487531 + ... + 488170.

It is an arithmetic number, because the mean of its divisors is an integer number (26553033).

Almost surely, 2^312224320 is an apocalyptic number.

It is an amenable number.

312224320 is an abundant number, since it is smaller than the sum of its proper divisors (431260604).

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

312224320 is an equidigital number, since it uses as much as digits as its factorization.

312224320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975718 (or 975708 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 312224320 is about 17669.8704013357. The cubic root of 312224320 is about 678.4047959344.

Adding to 312224320 its reverse (23422213), we get a palindrome (335646533).

The spelling of 312224320 in words is "three hundred twelve million, two hundred twenty-four thousand, three hundred twenty".