331230322330021 has 4 divisors (see below), whose sum is σ = 331358161129344. Its totient is φ = 331102483530700.

The previous prime is 331230322330013. The next prime is 331230322330057. The reversal of 331230322330021 is 120033223032133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 331230322330021 - 2³ = 331230322330013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331230322330001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63919395775 + ... + 63919400956.

It is an arithmetic number, because the mean of its divisors is an integer number (82839540282336).

Almost surely, 2^{331230322330021} is an apocalyptic number.

It is an amenable number.

331230322330021 is a deficient number, since it is larger than the sum of its proper divisors (127838799323).

331230322330021 is a wasteful number, since it uses less digits than its factorization.

331230322330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127838799322.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 331230322330021 its reverse (120033223032133), we get a palindrome (451263545362154).

The spelling of 331230322330021 in words is "three hundred thirty-one trillion, two hundred thirty billion, three hundred twenty-two million, three hundred thirty thousand, twenty-one".