231012212 has 12 divisors (see below), whose sum is σ = 407358336. Its totient is φ = 114624120.

The previous prime is 231012169. The next prime is 231012233. The reversal of 231012212 is 212210132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219908 + ... + 220955.

It is an arithmetic number, because the mean of its divisors is an integer number (33946528).

Almost surely, 2^231012212 is an apocalyptic number.

It is an amenable number.

231012212 is a deficient number, since it is larger than the sum of its proper divisors (176346124).

231012212 is a wasteful number, since it uses less digits than its factorization.

231012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440998 (or 440996 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 231012212 is about 15199.0858935661. The cubic root of 231012212 is about 613.5900562284.

Adding to 231012212 its reverse (212210132), we get a palindrome (443222344).

The spelling of 231012212 in words is "two hundred thirty-one million, twelve thousand, two hundred twelve".