331242310221 has 8 divisors (see below), whose sum is σ = 447876926784. Its totient is φ = 217717950240.

The previous prime is 331242310213. The next prime is 331242310249. The reversal of 331242310221 is 122013242133.

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

It is not a de Polignac number, because 331242310221 - 2³ = 331242310213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331242310191 and 331242310200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331242310211) 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, 777563896 + ... + 777564321.

It is an arithmetic number, because the mean of its divisors is an integer number (55984615848).

Almost surely, 2^331242310221 is an apocalyptic number.

It is an amenable number.

331242310221 is a deficient number, since it is larger than the sum of its proper divisors (116634616563).

331242310221 is a wasteful number, since it uses less digits than its factorization.

331242310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555128291.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 331242310221 its reverse (122013242133), we get a palindrome (453255552354).

The spelling of 331242310221 in words is "three hundred thirty-one billion, two hundred forty-two million, three hundred ten thousand, two hundred twenty-one".