320423430 has 16 divisors (see below), whose sum is σ = 769016304. Its totient is φ = 85446240.

The previous prime is 320423381. The next prime is 320423431. The reversal of 320423430 is 34324023.

It is a junction number, because it is equal to n+sod(n) for n = 320423397 and 320423406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320423431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5340361 + ... + 5340420.

It is an arithmetic number, because the mean of its divisors is an integer number (48063519).

Almost surely, 2^320423430 is an apocalyptic number.

320423430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320423430 is an abundant number, since it is smaller than the sum of its proper divisors (448592874).

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

320423430 is a wasteful number, since it uses less digits than its factorization.

320423430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10680791.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 320423430 is about 17900.3751357339. The cubic root of 320423430 is about 684.2919353326.

Adding to 320423430 its reverse (34324023), we get a palindrome (354747453).

The spelling of 320423430 in words is "three hundred twenty million, four hundred twenty-three thousand, four hundred thirty".