321311030112 has 144 divisors (see below), whose sum is σ = 982284226560. Its totient is φ = 99307696896.

The previous prime is 321311030107. The next prime is 321311030119. The reversal of 321311030112 is 211030113123.

321311030112 is a `hidden beast` number, since 321 + 31 + 1 + 0 + 301 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321311030119) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 367488 + ... + 881855.

It is an arithmetic number, because the mean of its divisors is an integer number (6821418240).

Almost surely, 2^321311030112 is an apocalyptic number.

321311030112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

321311030112 is an abundant number, since it is smaller than the sum of its proper divisors (660973196448).

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

321311030112 is a wasteful number, since it uses less digits than its factorization.

321311030112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249425 (or 1249414 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 321311030112 its reverse (211030113123), we get a palindrome (532341143235).

The spelling of 321311030112 in words is "three hundred twenty-one billion, three hundred eleven million, thirty thousand, one hundred twelve".