331132320321 has 16 divisors (see below), whose sum is σ = 506996855040. Its totient is φ = 190123819920.

The previous prime is 331132320307. The next prime is 331132320377. The reversal of 331132320321 is 123023231133.

It is not a de Polignac number, because 331132320321 - 2⁶ = 331132320257 is a prime.

It is a super-2 number, since 2×331132320321² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331132320291 and 331132320300.

It is not an unprimeable number, because it can be changed into a prime (331132327321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264060235 + ... + 264061488.

It is an arithmetic number, because the mean of its divisors is an integer number (31687303440).

Almost surely, 2^331132320321 is an apocalyptic number.

It is an amenable number.

331132320321 is a deficient number, since it is larger than the sum of its proper divisors (175864534719).

331132320321 is a wasteful number, since it uses less digits than its factorization.

331132320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528121756.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 331132320321 its reverse (123023231133), we get a palindrome (454155551454).

The spelling of 331132320321 in words is "three hundred thirty-one billion, one hundred thirty-two million, three hundred twenty thousand, three hundred twenty-one".