321013331320 has 64 divisors (see below), whose sum is σ = 788472597600. Its totient is φ = 116653486080.

The previous prime is 321013331299. The next prime is 321013331413. The reversal of 321013331320 is 23133310123.

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 = 321013331291 and 321013331300.

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, 410172 + ... + 900148.

Almost surely, 2^321013331320 is an apocalyptic number.

It is an amenable number.

321013331320 is an abundant number, since it is smaller than the sum of its proper divisors (467459266280).

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

321013331320 is a wasteful number, since it uses less digits than its factorization.

321013331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491488 (or 491484 counting only the distinct ones).

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

Adding to 321013331320 its reverse (23133310123), we get a palindrome (344146641443).

The spelling of 321013331320 in words is "three hundred twenty-one billion, thirteen million, three hundred thirty-one thousand, three hundred twenty".