320443313140 has 24 divisors (see below), whose sum is σ = 672993135360. Its totient is φ = 128165481888.

The previous prime is 320443313137. The next prime is 320443313249. The reversal of 320443313140 is 41313344023.

It is a super-2 number, since 2×320443313140² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320443313099 and 320443313108.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 516700 + ... + 952819.

It is an arithmetic number, because the mean of its divisors is an integer number (28041380640).

Almost surely, 2^320443313140 is an apocalyptic number.

It is an amenable number.

320443313140 is an abundant number, since it is smaller than the sum of its proper divisors (352549822220).

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

320443313140 is a wasteful number, since it uses less digits than its factorization.

320443313140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480431 (or 1480429 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 320443313140 its reverse (41313344023), we get a palindrome (361756657163).

The spelling of 320443313140 in words is "three hundred twenty billion, four hundred forty-three million, three hundred thirteen thousand, one hundred forty".