231210301212 has 72 divisors (see below), whose sum is σ = 641859145200. Its totient is φ = 69593483520.

The previous prime is 231210301211. The next prime is 231210301243. The reversal of 231210301212 is 212103012132.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231210301211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1900273 + ... + 2018280.

It is an arithmetic number, because the mean of its divisors is an integer number (8914710350).

Almost surely, 2^231210301212 is an apocalyptic number.

231210301212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231210301212 is an abundant number, since it is smaller than the sum of its proper divisors (410648843988).

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

231210301212 is a wasteful number, since it uses less digits than its factorization.

231210301212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3918723 (or 3918718 counting only the distinct ones).

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

Adding to 231210301212 its reverse (212103012132), we get a palindrome (443313313344).

The spelling of 231210301212 in words is "two hundred thirty-one billion, two hundred ten million, three hundred one thousand, two hundred twelve".