321103313232 has 80 divisors (see below), whose sum is σ = 893905286400. Its totient is φ = 98736938496.

The previous prime is 321103313203. The next prime is 321103313249. The reversal of 321103313232 is 232313301123.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800473 + ... + 1132679.

It is an arithmetic number, because the mean of its divisors is an integer number (11173816080).

Almost surely, 2^321103313232 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 321103313232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446952643200).

321103313232 is an abundant number, since it is smaller than the sum of its proper divisors (572801973168).

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

321103313232 is a wasteful number, since it uses less digits than its factorization.

321103313232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333780 (or 333774 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 321103313232 its reverse (232313301123), we get a palindrome (553416614355).

The spelling of 321103313232 in words is "three hundred twenty-one billion, one hundred three million, three hundred thirteen thousand, two hundred thirty-two".