321020332312 has 64 divisors (see below), whose sum is σ = 609635036160. Its totient is φ = 158468659200.

The previous prime is 321020332277. The next prime is 321020332349. The reversal of 321020332312 is 213233020123.

It is a super-2 number, since 2×321020332312² (a number of 24 digits) contains 22 as substring.

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, 118412637 + ... + 118415347.

It is an arithmetic number, because the mean of its divisors is an integer number (9525547440).

Almost surely, 2^321020332312 is an apocalyptic number.

It is an amenable number.

321020332312 is a deficient number, since it is larger than the sum of its proper divisors (288614703848).

321020332312 is a wasteful number, since it uses less digits than its factorization.

321020332312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464 (or 3460 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 321020332312 its reverse (213233020123), we get a palindrome (534253352435).

The spelling of 321020332312 in words is "three hundred twenty-one billion, twenty million, three hundred thirty-two thousand, three hundred twelve".