320112310020 has 96 divisors (see below), whose sum is σ = 903441724416. Its totient is φ = 84684912000.

The previous prime is 320112309991. The next prime is 320112310031. The reversal of 320112310020 is 20013211023.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44413257 + ... + 44420463.

It is an arithmetic number, because the mean of its divisors is an integer number (9410851296).

Almost surely, 2^320112310020 is an apocalyptic number.

320112310020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320112310020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451720862208).

320112310020 is an abundant number, since it is smaller than the sum of its proper divisors (583329414396).

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

320112310020 is a wasteful number, since it uses less digits than its factorization.

320112310020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13001 (or 12999 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 320112310020 its reverse (20013211023), we get a palindrome (340125521043).

The spelling of 320112310020 in words is "three hundred twenty billion, one hundred twelve million, three hundred ten thousand, twenty".