231232134031212 has 48 divisors (see below), whose sum is σ = 543832478784000. Its totient is φ = 76465677620160.

The previous prime is 231232134031111. The next prime is 231232134031247. The reversal of 231232134031212 is 212130431232132.

It is a self number, because there is not a number n which added to its sum of digits gives 231232134031212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78281412 + ... + 81181547.

It is an arithmetic number, because the mean of its divisors is an integer number (11329843308000).

Almost surely, 2^{231232134031212} is an apocalyptic number.

It is an amenable number.

231232134031212 is an abundant number, since it is smaller than the sum of its proper divisors (312600344752788).

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

231232134031212 is a wasteful number, since it uses less digits than its factorization.

231232134031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159463926 (or 159463924 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 231232134031212 its reverse (212130431232132), we get a palindrome (443362565263344).

The spelling of 231232134031212 in words is "two hundred thirty-one trillion, two hundred thirty-two billion, one hundred thirty-four million, thirty-one thousand, two hundred twelve".