331310230221 has 4 divisors (see below), whose sum is σ = 441746973632. Its totient is φ = 220873486812.

The previous prime is 331310230219. The next prime is 331310230253. The reversal of 331310230221 is 122032013133.

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 not a de Polignac number, because 331310230221 - 2¹ = 331310230219 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 (331310237221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55218371701 + ... + 55218371706.

It is an arithmetic number, because the mean of its divisors is an integer number (110436743408).

Almost surely, 2^331310230221 is an apocalyptic number.

It is an amenable number.

331310230221 is a deficient number, since it is larger than the sum of its proper divisors (110436743411).

331310230221 is a wasteful number, since it uses less digits than its factorization.

331310230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110436743410.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 331310230221 its reverse (122032013133), we get a palindrome (453342243354).

The spelling of 331310230221 in words is "three hundred thirty-one billion, three hundred ten million, two hundred thirty thousand, two hundred twenty-one".