320423512 has 8 divisors (see below), whose sum is σ = 600794100. Its totient is φ = 160211752.

The previous prime is 320423491. The next prime is 320423527. The reversal of 320423512 is 215324023.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20026462 + ... + 20026477.

Almost surely, 2^320423512 is an apocalyptic number.

It is an amenable number.

320423512 is a deficient number, since it is larger than the sum of its proper divisors (280370588).

320423512 is a wasteful number, since it uses less digits than its factorization.

320423512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40052945 (or 40052941 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 320423512 is about 17900.3774261885. The cubic root of 320423512 is about 684.2919937053.

Adding to 320423512 its reverse (215324023), we get a palindrome (535747535).

The spelling of 320423512 in words is "three hundred twenty million, four hundred twenty-three thousand, five hundred twelve".