320423310442 has 48 divisors (see below), whose sum is σ = 522742093632. Its totient is φ = 147196869120.

The previous prime is 320423310437. The next prime is 320423310443. The reversal of 320423310442 is 244013324023.

It is a super-2 number, since 2×320423310442² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320423310442.

It is not an unprimeable number, because it can be changed into a prime (320423310443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72148942 + ... + 72153382.

It is an arithmetic number, because the mean of its divisors is an integer number (10890460284).

Almost surely, 2^320423310442 is an apocalyptic number.

320423310442 is a deficient number, since it is larger than the sum of its proper divisors (202318783190).

320423310442 is a wasteful number, since it uses less digits than its factorization.

320423310442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7423 (or 7406 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 320423310442 its reverse (244013324023), we get a palindrome (564436634465).

The spelling of 320423310442 in words is "three hundred twenty billion, four hundred twenty-three million, three hundred ten thousand, four hundred forty-two".