320231521543040 has 64 divisors (see below), whose sum is σ = 767321503749360. Its totient is φ = 127796782620672.

The previous prime is 320231521542997. The next prime is 320231521543091. The reversal of 320231521543040 is 40345125132023.

It is a tau number, because it is divible by the number of its divisors (64).

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, 577507814 + ... + 578062053.

Almost surely, 2^{320231521543040} is an apocalyptic number.

It is an amenable number.

320231521543040 is an abundant number, since it is smaller than the sum of its proper divisors (447089982206320).

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

320231521543040 is a wasteful number, since it uses less digits than its factorization.

320231521543040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155570319 (or 1155570307 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 320231521543040 its reverse (40345125132023), we get a palindrome (360576646675063).

The spelling of 320231521543040 in words is "three hundred twenty trillion, two hundred thirty-one billion, five hundred twenty-one million, five hundred forty-three thousand, forty".