320120203020 has 48 divisors (see below), whose sum is σ = 896737631328. Its totient is φ = 85327191040.

The previous prime is 320120202979. The next prime is 320120203069. The reversal of 320120203020 is 20302021023.

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 15 ways as a sum of consecutive naturals, for example, 1058301 + ... + 1326740.

It is an arithmetic number, because the mean of its divisors is an integer number (18682033986).

Almost surely, 2^320120203020 is an apocalyptic number.

320120203020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320120203020 is an abundant number, since it is smaller than the sum of its proper divisors (576617428308).

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

320120203020 is a wasteful number, since it uses less digits than its factorization.

320120203020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387290 (or 2387288 counting only the distinct ones).

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

Adding to 320120203020 its reverse (20302021023), we get a palindrome (340422224043).

The spelling of 320120203020 in words is "three hundred twenty billion, one hundred twenty million, two hundred three thousand, twenty".