320021313232 has 10 divisors (see below), whose sum is σ = 620041294418. Its totient is φ = 160010656608.

The previous prime is 320021313191. The next prime is 320021313317. The reversal of 320021313232 is 232313120023.

It can be written as a sum of positive squares in only one way, i.e., 225184415296 + 94836897936 = 474536^2 + 307956^2 .

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, 10000666023 + ... + 10000666054.

Almost surely, 2^320021313232 is an apocalyptic number.

It is an amenable number.

320021313232 is a deficient number, since it is larger than the sum of its proper divisors (300019981186).

320021313232 is a wasteful number, since it uses less digits than its factorization.

320021313232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20001332085 (or 20001332079 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 320021313232 its reverse (232313120023), we get a palindrome (552334433255).

The spelling of 320021313232 in words is "three hundred twenty billion, twenty-one million, three hundred thirteen thousand, two hundred thirty-two".