320023212 has 24 divisors (see below), whose sum is σ = 766903536. Its totient is φ = 103791168.

The previous prime is 320023153. The next prime is 320023217. The reversal of 320023212 is 212320023.

It is a junction number, because it is equal to n+sod(n) for n = 320023191 and 320023200.

It is not an unprimeable number, because it can be changed into a prime (320023217) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 359943 + ... + 360830.

It is an arithmetic number, because the mean of its divisors is an integer number (31954314).

Almost surely, 2^320023212 is an apocalyptic number.

It is an amenable number.

320023212 is an abundant number, since it is smaller than the sum of its proper divisors (446880324).

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

320023212 is a wasteful number, since it uses less digits than its factorization.

320023212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720817 (or 720815 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 320023212 is about 17889.1926033569. The cubic root of 320023212 is about 684.0069165882.

Adding to 320023212 its reverse (212320023), we get a palindrome (532343235).

It can be divided in two parts, 320023 and 212, that multiplied together give a palindrome (67844876).

The spelling of 320023212 in words is "three hundred twenty million, twenty-three thousand, two hundred twelve".