320731443672 has 32 divisors (see below), whose sum is σ = 803614446000. Its totient is φ = 106672369664.

The previous prime is 320731443649. The next prime is 320731443677. The reversal of 320731443672 is 276344137023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320731443677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14870973 + ... + 14892524.

Almost surely, 2^320731443672 is an apocalyptic number.

It is an amenable number.

320731443672 is an abundant number, since it is smaller than the sum of its proper divisors (482883002328).

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

320731443672 is a wasteful number, since it uses less digits than its factorization.

320731443672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29763955 (or 29763951 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 42.

The spelling of 320731443672 in words is "three hundred twenty billion, seven hundred thirty-one million, four hundred forty-three thousand, six hundred seventy-two".