231033212 has 12 divisors (see below), whose sum is σ = 405244896. Its totient is φ = 115248960.

The previous prime is 231033197. The next prime is 231033233. The reversal of 231033212 is 212330132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64964 + ... + 68427.

It is an arithmetic number, because the mean of its divisors is an integer number (33770408).

Almost surely, 2^231033212 is an apocalyptic number.

It is an amenable number.

231033212 is a deficient number, since it is larger than the sum of its proper divisors (174211684).

231033212 is a wasteful number, since it uses less digits than its factorization.

231033212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133828 (or 133826 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 231033212 is about 15199.7767088862. The cubic root of 231033212 is about 613.6086483202.

Adding to 231033212 its reverse (212330132), we get a palindrome (443363344).

The spelling of 231033212 in words is "two hundred thirty-one million, thirty-three thousand, two hundred twelve".