231326633 has 8 divisors (see below), whose sum is σ = 250908840. Its totient is φ = 212408320.

The previous prime is 231326611. The next prime is 231326639. The reversal of 231326633 is 336623132.

It can be written as a sum of positive squares in 4 ways, for example, as 1106704 + 230219929 = 1052^2 + 15173^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231326633 - 2⁶ = 231326569 is a prime.

It is a super-2 number, since 2×231326633² = 107024022270233378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231326596 and 231326605.

It is not an unprimeable number, because it can be changed into a prime (231326639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165248 + ... + 166641.

It is an arithmetic number, because the mean of its divisors is an integer number (31363605).

Almost surely, 2^231326633 is an apocalyptic number.

It is an amenable number.

231326633 is a deficient number, since it is larger than the sum of its proper divisors (19582207).

231326633 is a wasteful number, since it uses less digits than its factorization.

231326633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331947.

The product of its digits is 11664, while the sum is 29.

The square root of 231326633 is about 15209.4257945525. The cubic root of 231326633 is about 613.8683072292.

Adding to 231326633 its reverse (336623132), we get a palindrome (567949765).

The spelling of 231326633 in words is "two hundred thirty-one million, three hundred twenty-six thousand, six hundred thirty-three".