312543224 has 16 divisors (see below), whose sum is σ = 669735600. Its totient is φ = 133947072.

The previous prime is 312543167. The next prime is 312543229. The reversal of 312543224 is 422345213.

It is a junction number, because it is equal to n+sod(n) for n = 312543193 and 312543202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312543229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2790509 + ... + 2790620.

It is an arithmetic number, because the mean of its divisors is an integer number (41858475).

Almost surely, 2^312543224 is an apocalyptic number.

It is an amenable number.

312543224 is an abundant number, since it is smaller than the sum of its proper divisors (357192376).

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

312543224 is a wasteful number, since it uses less digits than its factorization.

312543224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581142 (or 5581138 counting only the distinct ones).

The product of its digits is 5760, while the sum is 26.

The square root of 312543224 is about 17678.8920467319. The cubic root of 312543224 is about 678.6356901695.

Adding to 312543224 its reverse (422345213), we get a palindrome (734888437).

The spelling of 312543224 in words is "three hundred twelve million, five hundred forty-three thousand, two hundred twenty-four".