321333213231 has 12 divisors (see below), whose sum is σ = 464203189008. Its totient is φ = 214196658624.

The previous prime is 321333213217. The next prime is 321333213287. The reversal of 321333213231 is 132312333123.

321333213231 is a `hidden beast` number, since 3 + 2 + 1 + 3 + 332 + 1 + 323 + 1 = 666.

It is not a de Polignac number, because 321333213231 - 2⁶ = 321333213167 is a prime.

It is a super-2 number, since 2×321333213231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 321333213195 and 321333213204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321333213211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2043610 + ... + 2195223.

It is an arithmetic number, because the mean of its divisors is an integer number (38683599084).

Almost surely, 2^321333213231 is an apocalyptic number.

321333213231 is a deficient number, since it is larger than the sum of its proper divisors (142869975777).

321333213231 is a wasteful number, since it uses less digits than its factorization.

321333213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247262 (or 4247259 counting only the distinct ones).

The product of its digits is 5832, while the sum is 27.

Adding to 321333213231 its reverse (132312333123), we get a palindrome (453645546354).

The spelling of 321333213231 in words is "three hundred twenty-one billion, three hundred thirty-three million, two hundred thirteen thousand, two hundred thirty-one".