231227812 has 12 divisors (see below), whose sum is σ = 428451660. Its totient is φ = 108813056.

The previous prime is 231227807. The next prime is 231227831. The reversal of 231227812 is 218722132.

It can be written as a sum of positive squares in 2 ways, for example, as 136282276 + 94945536 = 11674^2 + 9744^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1700137 + ... + 1700272.

It is an arithmetic number, because the mean of its divisors is an integer number (35704305).

Almost surely, 2^231227812 is an apocalyptic number.

It is an amenable number.

231227812 is a deficient number, since it is larger than the sum of its proper divisors (197223848).

231227812 is a wasteful number, since it uses less digits than its factorization.

231227812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400430 (or 3400428 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 231227812 is about 15206.1767712992. The cubic root of 231227812 is about 613.7808814689.

Adding to 231227812 its reverse (218722132), we get a palindrome (449949944).

The spelling of 231227812 in words is "two hundred thirty-one million, two hundred twenty-seven thousand, eight hundred twelve".