231224441 has 4 divisors (see below), whose sum is σ = 264256512. Its totient is φ = 198192372.

The previous prime is 231224431. The next prime is 231224449. The reversal of 231224441 is 144422132.

231224441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-231224441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231224449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16516025 + ... + 16516038.

It is an arithmetic number, because the mean of its divisors is an integer number (66064128).

Almost surely, 2^231224441 is an apocalyptic number.

It is an amenable number.

231224441 is a deficient number, since it is larger than the sum of its proper divisors (33032071).

231224441 is an equidigital number, since it uses as much as digits as its factorization.

231224441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33032070.

The product of its digits is 1536, while the sum is 23.

The square root of 231224441 is about 15206.0659277803. The cubic root of 231224441 is about 613.7778987461. Note that the first 3 decimals are identical.

Adding to 231224441 its reverse (144422132), we get a palindrome (375646573).

The spelling of 231224441 in words is "two hundred thirty-one million, two hundred twenty-four thousand, four hundred forty-one".