231241233 has 4 divisors (see below), whose sum is σ = 308321648. Its totient is φ = 154160820.

The previous prime is 231241207. The next prime is 231241247. The reversal of 231241233 is 332142132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 231241233 - 2⁹ = 231240721 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (231241133) 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 3 ways as a sum of consecutive naturals, for example, 38540203 + ... + 38540208.

It is an arithmetic number, because the mean of its divisors is an integer number (77080412).

Almost surely, 2^231241233 is an apocalyptic number.

It is an amenable number.

231241233 is a deficient number, since it is larger than the sum of its proper divisors (77080415).

231241233 is an equidigital number, since it uses as much as digits as its factorization.

231241233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77080414.

The product of its digits is 864, while the sum is 21.

The square root of 231241233 is about 15206.6180658291. The cubic root of 231241233 is about 613.7927563291.

Adding to 231241233 its reverse (332142132), we get a palindrome (563383365).

The spelling of 231241233 in words is "two hundred thirty-one million, two hundred forty-one thousand, two hundred thirty-three".