320423151342 has 64 divisors (see below), whose sum is σ = 751839289344. Its totient is φ = 89132732640.

The previous prime is 320423151331. The next prime is 320423151371. The reversal of 320423151342 is 243151324023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276423 + ... + 846909.

It is an arithmetic number, because the mean of its divisors is an integer number (11747488896).

Almost surely, 2^320423151342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320423151342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375919644672).

320423151342 is an abundant number, since it is smaller than the sum of its proper divisors (431416138002).

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

320423151342 is a wasteful number, since it uses less digits than its factorization.

320423151342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570853.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 320423151342 its reverse (243151324023), we get a palindrome (563574475365).

The spelling of 320423151342 in words is "three hundred twenty billion, four hundred twenty-three million, one hundred fifty-one thousand, three hundred forty-two".