320321032 has 8 divisors (see below), whose sum is σ = 600601950. Its totient is φ = 160160512.

The previous prime is 320321011. The next prime is 320321059. The reversal of 320321032 is 230123023.

It can be written as a sum of positive squares in only one way, i.e., 253637476 + 66683556 = 15926^2 + 8166^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 320320997 and 320321015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20020057 + ... + 20020072.

Almost surely, 2^320321032 is an apocalyptic number.

It is an amenable number.

320321032 is a deficient number, since it is larger than the sum of its proper divisors (280280918).

320321032 is a wasteful number, since it uses less digits than its factorization.

320321032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40040135 (or 40040131 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 320321032 is about 17897.5146877995. The cubic root of 320321032 is about 684.2190343059.

Adding to 320321032 its reverse (230123023), we get a palindrome (550444055).

The spelling of 320321032 in words is "three hundred twenty million, three hundred twenty-one thousand, thirty-two".