231244303212 has 144 divisors (see below), whose sum is σ = 651746764032. Its totient is φ = 68651089920.

The previous prime is 231244303201. The next prime is 231244303247. The reversal of 231244303212 is 212303442132.

231244303212 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 443 + 0 + 3 + 212 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4865548 + ... + 4912844.

Almost surely, 2^231244303212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231244303212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325873382016).

231244303212 is an abundant number, since it is smaller than the sum of its proper divisors (420502460820).

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

231244303212 is a wasteful number, since it uses less digits than its factorization.

231244303212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47688 (or 47683 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 231244303212 its reverse (212303442132), we get a palindrome (443547745344).

The spelling of 231244303212 in words is "two hundred thirty-one billion, two hundred forty-four million, three hundred three thousand, two hundred twelve".