320120313032 has 64 divisors (see below), whose sum is σ = 682635307200. Its totient is φ = 139515436800.

The previous prime is 320120312977. The next prime is 320120313047. The reversal of 320120313032 is 230313021023.

It is a junction number, because it is equal to n+sod(n) for n = 320120312995 and 320120313013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342782 + ... + 870482.

It is an arithmetic number, because the mean of its divisors is an integer number (10666176675).

Almost surely, 2^320120313032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320120313032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341317653600).

320120313032 is an abundant number, since it is smaller than the sum of its proper divisors (362514994168).

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

320120313032 is a wasteful number, since it uses less digits than its factorization.

320120313032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528046 (or 528042 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 320120313032 its reverse (230313021023), we get a palindrome (550433334055).

The spelling of 320120313032 in words is "three hundred twenty billion, one hundred twenty million, three hundred thirteen thousand, thirty-two".