231303111320 has 32 divisors (see below), whose sum is σ = 521108834400. Its totient is φ = 92400918528.

The previous prime is 231303111311. The next prime is 231303111331. The reversal of 231303111320 is 23111303132.

It is a super-2 number, since 2×231303111320² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 231303111292 and 231303111301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3729044 + ... + 3790563.

It is an arithmetic number, because the mean of its divisors is an integer number (16284651075).

Almost surely, 2^231303111320 is an apocalyptic number.

231303111320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231303111320 is an abundant number, since it is smaller than the sum of its proper divisors (289805723080).

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

231303111320 is a wasteful number, since it uses less digits than its factorization.

231303111320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7520387 (or 7520383 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 231303111320 its reverse (23111303132), we get a palindrome (254414414452).

The spelling of 231303111320 in words is "two hundred thirty-one billion, three hundred three million, one hundred eleven thousand, three hundred twenty".