231133322112 has 128 divisors (see below), whose sum is σ = 765441619200. Its totient is φ = 60034621440.

The previous prime is 231133322111. The next prime is 231133322149. The reversal of 231133322112 is 211223331132.

231133322112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×231133322112² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231133322111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3878937 + ... + 3938072.

It is an arithmetic number, because the mean of its divisors is an integer number (5980012650).

Almost surely, 2^231133322112 is an apocalyptic number.

231133322112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231133322112 is an abundant number, since it is smaller than the sum of its proper divisors (534308297088).

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

231133322112 is a wasteful number, since it uses less digits than its factorization.

231133322112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7817044 (or 7817032 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

Adding to 231133322112 its reverse (211223331132), we get a palindrome (442356653244).

The spelling of 231133322112 in words is "two hundred thirty-one billion, one hundred thirty-three million, three hundred twenty-two thousand, one hundred twelve".