231623312 has 10 divisors (see below), whose sum is σ = 448770198. Its totient is φ = 115811648.

The previous prime is 231623291. The next prime is 231623323. The reversal of 231623312 is 213326132.

It can be written as a sum of positive squares in only one way, i.e., 132342016 + 99281296 = 11504^2 + 9964^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7238213 + ... + 7238244.

Almost surely, 2^231623312 is an apocalyptic number.

It is an amenable number.

231623312 is a deficient number, since it is larger than the sum of its proper divisors (217146886).

231623312 is a wasteful number, since it uses less digits than its factorization.

231623312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14476465 (or 14476459 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

The square root of 231623312 is about 15219.1757989715. The cubic root of 231623312 is about 614.1306261140.

Adding to 231623312 its reverse (213326132), we get a palindrome (444949444).

The spelling of 231623312 in words is "two hundred thirty-one million, six hundred twenty-three thousand, three hundred twelve".