320320131401220 has 96 divisors (see below), whose sum is σ = 949658680051200. Its totient is φ = 80393758777344.

The previous prime is 320320131401213. The next prime is 320320131401243. The reversal of 320320131401220 is 22104131023023.

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, 372695941 + ... + 373554419.

It is an arithmetic number, because the mean of its divisors is an integer number (9892277917200).

Almost surely, 2^{320320131401220} is an apocalyptic number.

320320131401220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320320131401220 is an abundant number, since it is smaller than the sum of its proper divisors (629338548649980).

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

320320131401220 is a wasteful number, since it uses less digits than its factorization.

320320131401220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224317 (or 1224315 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 320320131401220 its reverse (22104131023023), we get a palindrome (342424262424243).

The spelling of 320320131401220 in words is "three hundred twenty trillion, three hundred twenty billion, one hundred thirty-one million, four hundred one thousand, two hundred twenty".