320113005220 has 24 divisors (see below), whose sum is σ = 672266609784. Its totient is φ = 128039621376.

The previous prime is 320113005217. The next prime is 320113005221. The reversal of 320113005220 is 22500311023.

It can be written as a sum of positive squares in 4 ways, for example, as 4657789504 + 315455215716 = 68248^2 + 561654^2 .

It is a super-2 number, since 2×320113005220² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320113005221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138142 + ... + 811978.

It is an arithmetic number, because the mean of its divisors is an integer number (28011108741).

Almost surely, 2^320113005220 is an apocalyptic number.

It is an amenable number.

320113005220 is an abundant number, since it is smaller than the sum of its proper divisors (352153604564).

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

320113005220 is a wasteful number, since it uses less digits than its factorization.

320113005220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697599 (or 697597 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 320113005220 its reverse (22500311023), we get a palindrome (342613316243).

The spelling of 320113005220 in words is "three hundred twenty billion, one hundred thirteen million, five thousand, two hundred twenty".