320332001320 has 32 divisors (see below), whose sum is σ = 745600350600. Its totient is φ = 123714427648.

The previous prime is 320332001303. The next prime is 320332001329. The reversal of 320332001320 is 23100233023.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 229136457124 + 91195544196 = 478682^2 + 301986^2 .

It is a super-2 number, since 2×320332001320² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320332001329) 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, 138072979 + ... + 138075298.

Almost surely, 2^320332001320 is an apocalyptic number.

It is an amenable number.

320332001320 is an abundant number, since it is smaller than the sum of its proper divisors (425268349280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320332001320 is a wasteful number, since it uses less digits than its factorization.

320332001320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276148317 (or 276148313 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 320332001320 its reverse (23100233023), we get a palindrome (343432234343).

The spelling of 320332001320 in words is "three hundred twenty billion, three hundred thirty-two million, one thousand, three hundred twenty".