321311330032 has 160 divisors (see below), whose sum is σ = 781253282304. Its totient is φ = 124366233600.

The previous prime is 321311330023. The next prime is 321311330047. The reversal of 321311330032 is 230033113123.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 321311329985 and 321311330012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247733608 + ... + 247734904.

Almost surely, 2^321311330032 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 321311330032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390626641152).

321311330032 is an abundant number, since it is smaller than the sum of its proper divisors (459941952272).

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

321311330032 is a wasteful number, since it uses less digits than its factorization.

321311330032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487 (or 2481 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 321311330032 its reverse (230033113123), we get a palindrome (551344443155).

The spelling of 321311330032 in words is "three hundred twenty-one billion, three hundred eleven million, three hundred thirty thousand, thirty-two".