320004013304131 has 4 divisors (see below), whose sum is σ = 344619706635232. Its totient is φ = 295388319973032.

The previous prime is 320004013304123. The next prime is 320004013304137. The reversal of 320004013304131 is 131403310400023.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 320004013304131 - 2³ = 320004013304123 is a prime.

It is a super-2 number, since 2×320004013304131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320004013304096 and 320004013304105.

It is not an unprimeable number, because it can be changed into a prime (320004013304137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12307846665531 + ... + 12307846665556.

It is an arithmetic number, because the mean of its divisors is an integer number (86154926658808).

Almost surely, 2^{320004013304131} is an apocalyptic number.

320004013304131 is a deficient number, since it is larger than the sum of its proper divisors (24615693331101).

320004013304131 is a wasteful number, since it uses less digits than its factorization.

320004013304131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24615693331100.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 320004013304131 its reverse (131403310400023), we get a palindrome (451407323704154).

The spelling of 320004013304131 in words is "three hundred twenty trillion, four billion, thirteen million, three hundred four thousand, one hundred thirty-one".