320131120231 has 16 divisors (see below), whose sum is σ = 348724807200. Its totient is φ = 292106124288.

The previous prime is 320131120229. The next prime is 320131120241. The reversal of 320131120231 is 132021131023.

It is a cyclic number.

It is not a de Polignac number, because 320131120231 - 2¹ = 320131120229 is a prime.

It is a super-2 number, since 2×320131120231² (a number of 24 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 = 320131120199 and 320131120208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320131120201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4464000 + ... + 4535146.

It is an arithmetic number, because the mean of its divisors is an integer number (21795300450).

Almost surely, 2^320131120231 is an apocalyptic number.

320131120231 is a deficient number, since it is larger than the sum of its proper divisors (28593686969).

320131120231 is a wasteful number, since it uses less digits than its factorization.

320131120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75138.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 320131120231 its reverse (132021131023), we get a palindrome (452152251254).

The spelling of 320131120231 in words is "three hundred twenty billion, one hundred thirty-one million, one hundred twenty thousand, two hundred thirty-one".