312321232144 has 40 divisors (see below), whose sum is σ = 606816192032. Its totient is φ = 155724042240.

The previous prime is 312321232063. The next prime is 312321232183. The reversal of 312321232144 is 441232123213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9782992 + ... + 9814864.

Almost surely, 2^312321232144 is an apocalyptic number.

It is an amenable number.

312321232144 is a deficient number, since it is larger than the sum of its proper divisors (294494959888).

312321232144 is a wasteful number, since it uses less digits than its factorization.

312321232144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33575 (or 33569 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

Adding to 312321232144 its reverse (441232123213), we get a palindrome (753553355357).

It can be divided in two parts, 31232 and 1232144, that added together give a square (1263376 = 1124²).

The spelling of 312321232144 in words is "three hundred twelve billion, three hundred twenty-one million, two hundred thirty-two thousand, one hundred forty-four".