321031012112 has 30 divisors (see below), whose sum is σ = 622602441258. Its totient is φ = 160359565312.

The previous prime is 321031012091. The next prime is 321031012123. The reversal of 321031012112 is 211210130123.

It can be written as a sum of positive squares in 3 ways, for example, as 55892525056 + 265138487056 = 236416^2 + 514916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19246208 + ... + 19262880.

Almost surely, 2^321031012112 is an apocalyptic number.

It is an amenable number.

321031012112 is a deficient number, since it is larger than the sum of its proper divisors (301571429146).

321031012112 is an equidigital number, since it uses as much as digits as its factorization.

321031012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18875 (or 17772 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 321031012112 its reverse (211210130123), we get a palindrome (532241142235).

The spelling of 321031012112 in words is "three hundred twenty-one billion, thirty-one million, twelve thousand, one hundred twelve".