231252633 has 6 divisors (see below), whose sum is σ = 334031594. Its totient is φ = 154168416.

The previous prime is 231252631. The next prime is 231252661. The reversal of 231252633 is 336252132.

231252633 is a `hidden beast` number, since 2 + 3 + 1 + 25 + 2 + 633 = 666.

It can be written as a sum of positive squares in only one way, i.e., 217769049 + 13483584 = 14757^2 + 3672^2 .

It is not a de Polignac number, because 231252633 - 2¹ = 231252631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231252597 and 231252606.

It is not an unprimeable number, because it can be changed into a prime (231252631) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 12847360 + ... + 12847377.

Almost surely, 2^231252633 is an apocalyptic number.

It is an amenable number.

231252633 is a deficient number, since it is larger than the sum of its proper divisors (102778961).

231252633 is a wasteful number, since it uses less digits than its factorization.

231252633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25694743 (or 25694740 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 231252633 is about 15206.9928980058. The cubic root of 231252633 is about 613.8028426537.

It can be divided in two parts, 2312 and 52633, that added together give a palindrome (54945).

The spelling of 231252633 in words is "two hundred thirty-one million, two hundred fifty-two thousand, six hundred thirty-three".