331220323323321 has 8 divisors (see below), whose sum is σ = 441719896080960. Its totient is φ = 220767149723952.

The previous prime is 331220323323247. The next prime is 331220323323347. The reversal of 331220323323321 is 123323323022133.

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

It is not a de Polignac number, because 331220323323321 - 2²¹ = 331220321226169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (331220323323361) 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, 11599772910 + ... + 11599801463.

It is an arithmetic number, because the mean of its divisors is an integer number (55214987010120).

Almost surely, 2^{331220323323321} is an apocalyptic number.

It is an amenable number.

331220323323321 is a deficient number, since it is larger than the sum of its proper divisors (110499572757639).

331220323323321 is a wasteful number, since it uses less digits than its factorization.

331220323323321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23199579135.

The product of its (nonzero) digits is 69984, while the sum is 33.

Adding to 331220323323321 its reverse (123323323022133), we get a palindrome (454543646345454).

The spelling of 331220323323321 in words is "three hundred thirty-one trillion, two hundred twenty billion, three hundred twenty-three million, three hundred twenty-three thousand, three hundred twenty-one".