231234433 has 8 divisors (see below), whose sum is σ = 244688256. Its totient is φ = 218064000.

The previous prime is 231234403. The next prime is 231234449. The reversal of 231234433 is 334432132.

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 231234433 - 2⁵ = 231234401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231234398 and 231234407.

It is not an unprimeable number, because it can be changed into a prime (231234403) 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 7 ways as a sum of consecutive naturals, for example, 69168 + ... + 72433.

It is an arithmetic number, because the mean of its divisors is an integer number (30586032).

Almost surely, 2^231234433 is an apocalyptic number.

231234433 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

231234433 is a deficient number, since it is larger than the sum of its proper divisors (13453823).

231234433 is a wasteful number, since it uses less digits than its factorization.

231234433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141695.

The product of its digits is 5184, while the sum is 25.

The square root of 231234433 is about 15206.3944773243. The cubic root of 231234433 is about 613.7867397671.

Adding to 231234433 its reverse (334432132), we get a palindrome (565666565).

It can be divided in two parts, 23123 and 4433, that added together give a square (27556 = 166²).

The spelling of 231234433 in words is "two hundred thirty-one million, two hundred thirty-four thousand, four hundred thirty-three".