231200212 has 6 divisors (see below), whose sum is σ = 404600378. Its totient is φ = 115600104.

The previous prime is 231200131. The next prime is 231200231. The reversal of 231200212 is 212002132.

It can be written as a sum of positive squares in only one way, i.e., 224880016 + 6320196 = 14996^2 + 2514^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231200192 and 231200201.

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 as a sum of consecutive naturals, namely, 28900023 + ... + 28900030.

Almost surely, 2^231200212 is an apocalyptic number.

It is an amenable number.

231200212 is a deficient number, since it is larger than the sum of its proper divisors (173400166).

231200212 is a wasteful number, since it uses less digits than its factorization.

231200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57800057 (or 57800055 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 231200212 is about 15205.2692182677. The cubic root of 231200212 is about 613.7564596281.

Adding to 231200212 its reverse (212002132), we get a palindrome (443202344).

The spelling of 231200212 in words is "two hundred thirty-one million, two hundred thousand, two hundred twelve".