331311223321 has 8 divisors (see below), whose sum is σ = 363528716040. Its totient is φ = 300055446912.

The previous prime is 331311223291. The next prime is 331311223337. The reversal of 331311223321 is 123322113133.

It can be written as a sum of positive squares in 4 ways, for example, as 8526400 + 331302696921 = 2920^2 + 575589^2 .

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

It is not a de Polignac number, because 331311223321 - 2²³ = 331302834713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331311223351) 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, 240428356 + ... + 240429733.

It is an arithmetic number, because the mean of its divisors is an integer number (45441089505).

Almost surely, 2^331311223321 is an apocalyptic number.

It is an amenable number.

331311223321 is a deficient number, since it is larger than the sum of its proper divisors (32217492719).

331311223321 is a wasteful number, since it uses less digits than its factorization.

331311223321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480858155.

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

Adding to 331311223321 its reverse (123322113133), we get a palindrome (454633336454).

The spelling of 331311223321 in words is "three hundred thirty-one billion, three hundred eleven million, two hundred twenty-three thousand, three hundred twenty-one".