331131311023321 has 8 divisors (see below), whose sum is σ = 331231346265600. Its totient is φ = 331031281701120.

The previous prime is 331131311023309. The next prime is 331131311023379. The reversal of 331131311023321 is 123320113131133.

It is a happy number.

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 331131311023321 - 2²¹ = 331131308926169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331131311023321.

It is not an unprimeable number, because it can be changed into a prime (331131311023621) 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, 111709945 + ... + 114635833.

It is an arithmetic number, because the mean of its divisors is an integer number (41403918283200).

Almost surely, 2^{331131311023321} is an apocalyptic number.

It is an amenable number.

331131311023321 is a deficient number, since it is larger than the sum of its proper divisors (100035242279).

331131311023321 is a wasteful number, since it uses less digits than its factorization.

331131311023321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2960039.

The product of its (nonzero) digits is 2916, while the sum is 28.

Adding to 331131311023321 its reverse (123320113131133), we get a palindrome (454451424154454).

The spelling of 331131311023321 in words is "three hundred thirty-one trillion, one hundred thirty-one billion, three hundred eleven million, twenty-three thousand, three hundred twenty-one".