321112231000 has 128 divisors (see below), whose sum is σ = 820025856000. Its totient is φ = 116723376000.

The previous prime is 321112230997. The next prime is 321112231129. The reversal of 321112231000 is 132211123.

It is a super-2 number, since 2×321112231000² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 45745491 + ... + 45752509.

It is an arithmetic number, because the mean of its divisors is an integer number (6406452000).

Almost surely, 2^321112231000 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 321112231000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410012928000).

321112231000 is an abundant number, since it is smaller than the sum of its proper divisors (498913625000).

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

321112231000 is a wasteful number, since it uses less digits than its factorization.

321112231000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11210 (or 11196 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 321112231000 its reverse (132211123), we get a palindrome (321244442123).

The spelling of 321112231000 in words is "three hundred twenty-one billion, one hundred twelve million, two hundred thirty-one thousand".