231101302212 has 36 divisors (see below), whose sum is σ = 637279349616. Its totient is φ = 70030697520.

The previous prime is 231101302193. The next prime is 231101302213. The reversal of 231101302212 is 212203101132.

231101302212 is a `hidden beast` number, since 2 + 311 + 0 + 130 + 221 + 2 = 666.

231101302212 is digitally balanced in base 2, 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 (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (231101302213) 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 11 ways as a sum of consecutive naturals, for example, 291794178 + ... + 291794969.

It is an arithmetic number, because the mean of its divisors is an integer number (17702204156).

Almost surely, 2^231101302212 is an apocalyptic number.

231101302212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231101302212 is an abundant number, since it is smaller than the sum of its proper divisors (406178047404).

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

231101302212 is a wasteful number, since it uses less digits than its factorization.

231101302212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583589168 (or 583589163 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 231101302212 its reverse (212203101132), we get a palindrome (443304403344).

The spelling of 231101302212 in words is "two hundred thirty-one billion, one hundred one million, three hundred two thousand, two hundred twelve".