321403032312 has 128 divisors (see below), whose sum is σ = 841821880320. Its totient is φ = 102131568000.

The previous prime is 321403032259. The next prime is 321403032323. The reversal of 321403032312 is 213230304123.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 96719083 + ... + 96722405.

It is an arithmetic number, because the mean of its divisors is an integer number (6576733440).

Almost surely, 2^321403032312 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 321403032312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420910940160).

321403032312 is an abundant number, since it is smaller than the sum of its proper divisors (520418848008).

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

321403032312 is a wasteful number, since it uses less digits than its factorization.

321403032312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5265 (or 5261 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 321403032312 its reverse (213230304123), we get a palindrome (534633336435).

The spelling of 321403032312 in words is "three hundred twenty-one billion, four hundred three million, thirty-two thousand, three hundred twelve".