230144021 has 2 divisors, whose sum is σ = 230144022. Its totient is φ = 230144020.

The previous prime is 230143993. The next prime is 230144023. The reversal of 230144021 is 120441032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226954225 + 3189796 = 15065^2 + 1786^2 .

It is a cyclic number.

It is not a de Polignac number, because 230144021 - 2¹⁴ = 230127637 is a prime.

Together with 230144023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230144023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115072010 + 115072011.

It is an arithmetic number, because the mean of its divisors is an integer number (115072011).

Almost surely, 2^230144021 is an apocalyptic number.

It is an amenable number.

230144021 is a deficient number, since it is larger than the sum of its proper divisors (1).

230144021 is an equidigital number, since it uses as much as digits as its factorization.

230144021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 230144021 is about 15170.4983767838. The cubic root of 230144021 is about 612.8204257613.

Adding to 230144021 its reverse (120441032), we get a palindrome (350585053).

The spelling of 230144021 in words is "two hundred thirty million, one hundred forty-four thousand, twenty-one".