320644503606331 has 8 divisors (see below), whose sum is σ = 320869931888240. Its totient is φ = 320419088865792.

The previous prime is 320644503606293. The next prime is 320644503606337. The reversal of 320644503606331 is 133606305446023.

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 320644503606331 - 2⁹ = 320644503605819 is a prime.

It is a super-2 number, since 2×320644503606331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320644503606337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44224291 + ... + 50961523.

It is an arithmetic number, because the mean of its divisors is an integer number (40108741486030).

Almost surely, 2^{320644503606331} is an apocalyptic number.

320644503606331 is a deficient number, since it is larger than the sum of its proper divisors (225428281909).

320644503606331 is a wasteful number, since it uses less digits than its factorization.

320644503606331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770685.

The product of its (nonzero) digits is 2799360, while the sum is 46.

The spelling of 320644503606331 in words is "three hundred twenty trillion, six hundred forty-four billion, five hundred three million, six hundred six thousand, three hundred thirty-one".