231231432412212 has 24 divisors (see below), whose sum is σ = 541778764192512. Its totient is φ = 76757321961600.

The previous prime is 231231432412199. The next prime is 231231432412217. The reversal of 231231432412212 is 212214234132132.

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 (231231432412217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39977768964 + ... + 39977774747.

It is an arithmetic number, because the mean of its divisors is an integer number (22574115174688).

Almost surely, 2^{231231432412212} is an apocalyptic number.

It is an amenable number.

231231432412212 is an abundant number, since it is smaller than the sum of its proper divisors (310547331780300).

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

231231432412212 is a wasteful number, since it uses less digits than its factorization.

231231432412212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79955543959 (or 79955543957 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

Adding to 231231432412212 its reverse (212214234132132), we get a palindrome (443445666544344).

The spelling of 231231432412212 in words is "two hundred thirty-one trillion, two hundred thirty-one billion, four hundred thirty-two million, four hundred twelve thousand, two hundred twelve".