320135421524 has 24 divisors (see below), whose sum is σ = 567374371200. Its totient is φ = 158041325216.

The previous prime is 320135421523. The next prime is 320135421631. The reversal of 320135421524 is 425124531023.

It is a super-2 number, since 2×320135421524² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320135421521) 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, 1508672 + ... + 1707735.

It is an arithmetic number, because the mean of its divisors is an integer number (23640598800).

Almost surely, 2^320135421524 is an apocalyptic number.

It is an amenable number.

320135421524 is a deficient number, since it is larger than the sum of its proper divisors (247238949676).

320135421524 is a wasteful number, since it uses less digits than its factorization.

320135421524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216727 (or 3216725 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 320135421524 its reverse (425124531023), we get a palindrome (745259952547).

The spelling of 320135421524 in words is "three hundred twenty billion, one hundred thirty-five million, four hundred twenty-one thousand, five hundred twenty-four".