231333113220 has 48 divisors (see below), whose sum is σ = 706617511488. Its totient is φ = 56080754560.

The previous prime is 231333113203. The next prime is 231333113227. The reversal of 231333113220 is 22311333132.

231333113220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231333113227) 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, 175251699 + ... + 175253018.

It is an arithmetic number, because the mean of its divisors is an integer number (14721198156).

Almost surely, 2^231333113220 is an apocalyptic number.

231333113220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231333113220 is an abundant number, since it is smaller than the sum of its proper divisors (475284398268).

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

231333113220 is a wasteful number, since it uses less digits than its factorization.

231333113220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350504740 (or 350504738 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 231333113220 its reverse (22311333132), we get a palindrome (253644446352).

The spelling of 231333113220 in words is "two hundred thirty-one billion, three hundred thirty-three million, one hundred thirteen thousand, two hundred twenty".