320311123230231 has 64 divisors (see below), whose sum is σ = 544684125081600. Its totient is φ = 182239214024448.

The previous prime is 320311123230223. The next prime is 320311123230257. The reversal of 320311123230231 is 132032321113023.

320311123230231 is a `hidden beast` number, since 3 + 2 + 0 + 311 + 1 + 2 + 323 + 0 + 23 + 1 = 666.

It is not a de Polignac number, because 320311123230231 - 2³ = 320311123230223 is a prime.

It is a super-2 number, since 2×320311123230231² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 320311123230195 and 320311123230204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320311123230031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 276455635 + ... + 277611851.

It is an arithmetic number, because the mean of its divisors is an integer number (8510689454400).

Almost surely, 2^{320311123230231} is an apocalyptic number.

320311123230231 is a deficient number, since it is larger than the sum of its proper divisors (224373001851369).

320311123230231 is a wasteful number, since it uses less digits than its factorization.

320311123230231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162605 (or 1162599 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 320311123230231 its reverse (132032321113023), we get a palindrome (452343444343254).

The spelling of 320311123230231 in words is "three hundred twenty trillion, three hundred eleven billion, one hundred twenty-three million, two hundred thirty thousand, two hundred thirty-one".