312224432 has 40 divisors (see below), whose sum is σ = 659749440. Its totient is φ = 142272000.

The previous prime is 312224377. The next prime is 312224449. The reversal of 312224432 is 234422213.

It is a junction number, because it is equal to n+sod(n) for n = 312224398 and 312224407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6932 + ... + 25932.

It is an arithmetic number, because the mean of its divisors is an integer number (16493736).

Almost surely, 2^312224432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312224432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329874720).

312224432 is an abundant number, since it is smaller than the sum of its proper divisors (347525008).

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

312224432 is a wasteful number, since it uses less digits than its factorization.

312224432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19101 (or 19095 counting only the distinct ones).

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

The square root of 312224432 is about 17669.8735705720. The cubic root of 312224432 is about 678.4048770527.

Adding to 312224432 its reverse (234422213), we get a palindrome (546646645).

The spelling of 312224432 in words is "three hundred twelve million, two hundred twenty-four thousand, four hundred thirty-two".