231101311132212 has 24 divisors (see below), whose sum is σ = 539794031130816. Its totient is φ = 76954107736128.

The previous prime is 231101311132183. The next prime is 231101311132231. The reversal of 231101311132212 is 212231113101132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9957818073 + ... + 9957841280.

It is an arithmetic number, because the mean of its divisors is an integer number (22491417963784).

Almost surely, 2^{231101311132212} is an apocalyptic number.

It is an amenable number.

231101311132212 is an abundant number, since it is smaller than the sum of its proper divisors (308692719998604).

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

231101311132212 is a wasteful number, since it uses less digits than its factorization.

231101311132212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19915660327 (or 19915660325 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 231101311132212 its reverse (212231113101132), we get a palindrome (443332424233344).

The spelling of 231101311132212 in words is "two hundred thirty-one trillion, one hundred one billion, three hundred eleven million, one hundred thirty-two thousand, two hundred twelve".