312222224 has 20 divisors (see below), whose sum is σ = 605703420. Its totient is φ = 155911680.

The previous prime is 312222203. The next prime is 312222227. The reversal of 312222224 is 422222213.

It can be written as a sum of positive squares in 2 ways, for example, as 188567824 + 123654400 = 13732^2 + 11120^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312222196 and 312222205.

It is not an unprimeable number, because it can be changed into a prime (312222227) 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, 884 + ... + 25004.

It is an arithmetic number, because the mean of its divisors is an integer number (30285171).

Almost surely, 2^312222224 is an apocalyptic number.

It is an amenable number.

312222224 is a deficient number, since it is larger than the sum of its proper divisors (293481196).

312222224 is a wasteful number, since it uses less digits than its factorization.

312222224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24938 (or 24932 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 312222224 is about 17669.8110912369. The cubic root of 312222224 is about 678.4032778596.

Adding to 312222224 its reverse (422222213), we get a palindrome (734444437).

The spelling of 312222224 in words is "three hundred twelve million, two hundred twenty-two thousand, two hundred twenty-four".