331212313321 has 8 divisors (see below), whose sum is σ = 340760659424. Its totient is φ = 321799404960.

The previous prime is 331212313297. The next prime is 331212313331. The reversal of 331212313321 is 123313212133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 331212313321 - 2¹¹ = 331212311273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331212313331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33854475 + ... + 33864256.

It is an arithmetic number, because the mean of its divisors is an integer number (42595082428).

Almost surely, 2^331212313321 is an apocalyptic number.

It is an amenable number.

331212313321 is a deficient number, since it is larger than the sum of its proper divisors (9548346103).

331212313321 is an equidigital number, since it uses as much as digits as its factorization.

331212313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67718871.

The product of its digits is 1944, while the sum is 25.

Adding to 331212313321 its reverse (123313212133), we get a palindrome (454525525454).

The spelling of 331212313321 in words is "three hundred thirty-one billion, two hundred twelve million, three hundred thirteen thousand, three hundred twenty-one".