320240323231 has 16 divisors (see below), whose sum is σ = 332046328320. Its totient is φ = 308631121920.

The previous prime is 320240323229. The next prime is 320240323307. The reversal of 320240323231 is 132323042023.

It is a cyclic number.

It is not a de Polignac number, because 320240323231 - 2¹ = 320240323229 is a prime.

It is a super-2 number, since 2×320240323231² (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 = 320240323196 and 320240323205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320240323331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3926095 + ... + 4006831.

It is an arithmetic number, because the mean of its divisors is an integer number (20752895520).

Almost surely, 2^320240323231 is an apocalyptic number.

320240323231 is a deficient number, since it is larger than the sum of its proper divisors (11806005089).

320240323231 is a wasteful number, since it uses less digits than its factorization.

320240323231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81954.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 320240323231 its reverse (132323042023), we get a palindrome (452563365254).

The spelling of 320240323231 in words is "three hundred twenty billion, two hundred forty million, three hundred twenty-three thousand, two hundred thirty-one".