320423224 has 32 divisors (see below), whose sum is σ = 656313840. Its totient is φ = 145446400.

The previous prime is 320423209. The next prime is 320423251. The reversal of 320423224 is 422324023.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 320423195 and 320423204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75462 + ... + 79594.

Almost surely, 2^320423224 is an apocalyptic number.

It is an amenable number.

320423224 is an abundant number, since it is smaller than the sum of its proper divisors (335890616).

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

320423224 is a wasteful number, since it uses less digits than its factorization.

320423224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031 (or 5027 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 320423224 is about 17900.3693816636. The cubic root of 320423224 is about 684.2917886889.

Adding to 320423224 its reverse (422324023), we get a palindrome (742747247).

The spelling of 320423224 in words is "three hundred twenty million, four hundred twenty-three thousand, two hundred twenty-four".