312321131332 has 48 divisors (see below), whose sum is σ = 640732597120. Its totient is φ = 130419217152.

The previous prime is 312321131327. The next prime is 312321131393. The reversal of 312321131332 is 233131123213.

It is a junction number, because it is equal to n+sod(n) for n = 312321131297 and 312321131306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175318 + ... + 809554.

Almost surely, 2^312321131332 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 312321131332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320366298560).

312321131332 is an abundant number, since it is smaller than the sum of its proper divisors (328411465788).

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

312321131332 is a wasteful number, since it uses less digits than its factorization.

312321131332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634700 (or 634698 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

Adding to 312321131332 its reverse (233131123213), we get a palindrome (545452254545).

The spelling of 312321131332 in words is "three hundred twelve billion, three hundred twenty-one million, one hundred thirty-one thousand, three hundred thirty-two".