331130031221 has 8 divisors (see below), whose sum is σ = 361246470624. Its totient is φ = 301015876720.

The previous prime is 331130031149. The next prime is 331130031233. The reversal of 331130031221 is 122130031133.

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 331130031221 - 2¹⁰ = 331130030197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331130031193 and 331130031202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331130031821) 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 7 ways as a sum of consecutive naturals, for example, 260870 + ... + 854583.

It is an arithmetic number, because the mean of its divisors is an integer number (45155808828).

Almost surely, 2^331130031221 is an apocalyptic number.

It is an amenable number.

331130031221 is a deficient number, since it is larger than the sum of its proper divisors (30116439403).

331130031221 is a wasteful number, since it uses less digits than its factorization.

331130031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142451.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 331130031221 its reverse (122130031133), we get a palindrome (453260062354).

The spelling of 331130031221 in words is "three hundred thirty-one billion, one hundred thirty million, thirty-one thousand, two hundred twenty-one".