331013231320321 has 32 divisors (see below), whose sum is σ = 391255034757120. Its totient is φ = 276820576704000.

The previous prime is 331013231320309. The next prime is 331013231320349. The reversal of 331013231320321 is 123023132310133.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 331013231320321 - 2²¹ = 331013229223169 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 331013231320321.

It is not an unprimeable number, because it can be changed into a prime (331013231320351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131420880 + ... + 133915921.

It is an arithmetic number, because the mean of its divisors is an integer number (12226719836160).

Almost surely, 2^{331013231320321} is an apocalyptic number.

It is an amenable number.

331013231320321 is a deficient number, since it is larger than the sum of its proper divisors (60241803436799).

331013231320321 is a wasteful number, since it uses less digits than its factorization.

331013231320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265337005.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 331013231320321 its reverse (123023132310133), we get a palindrome (454036363630454).

The spelling of 331013231320321 in words is "three hundred thirty-one trillion, thirteen billion, two hundred thirty-one million, three hundred twenty thousand, three hundred twenty-one".