320331231213 has 32 divisors (see below), whose sum is σ = 509531258880. Its totient is φ = 175151306880.

The previous prime is 320331231211. The next prime is 320331231263. The reversal of 320331231213 is 312132133023.

It is not a de Polignac number, because 320331231213 - 2¹ = 320331231211 is a prime.

It is a super-2 number, since 2×320331231213² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320331231211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2706445 + ... + 2822322.

It is an arithmetic number, because the mean of its divisors is an integer number (15922851840).

Almost surely, 2^320331231213 is an apocalyptic number.

It is an amenable number.

320331231213 is a deficient number, since it is larger than the sum of its proper divisors (189200027667).

320331231213 is a wasteful number, since it uses less digits than its factorization.

320331231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528897.

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

Adding to 320331231213 its reverse (312132133023), we get a palindrome (632463364236).

The spelling of 320331231213 in words is "three hundred twenty billion, three hundred thirty-one million, two hundred thirty-one thousand, two hundred thirteen".