231310220320 has 96 divisors (see below), whose sum is σ = 551932315200. Its totient is φ = 91600444416.

The previous prime is 231310220291. The next prime is 231310220371. The reversal of 231310220320 is 23022013132.

231310220320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 34733151 + ... + 34739809.

It is an arithmetic number, because the mean of its divisors is an integer number (5749294950).

Almost surely, 2^231310220320 is an apocalyptic number.

231310220320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231310220320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275966157600).

231310220320 is an abundant number, since it is smaller than the sum of its proper divisors (320622094880).

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

231310220320 is a wasteful number, since it uses less digits than its factorization.

231310220320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8810 (or 8802 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 231310220320 its reverse (23022013132), we get a palindrome (254332233452).

The spelling of 231310220320 in words is "two hundred thirty-one billion, three hundred ten million, two hundred twenty thousand, three hundred twenty".