23021441 has 2 divisors, whose sum is σ = 23021442. Its totient is φ = 23021440.

The previous prime is 23021431. The next prime is 23021443. The reversal of 23021441 is 14412032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13535041 + 9486400 = 3679^2 + 3080^2 .

It is a cyclic number.

It is not a de Polignac number, because 23021441 - 2¹⁴ = 23005057 is a prime.

It is a Sophie Germain prime.

Together with 23021443, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (23021443) 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 as a sum of consecutive naturals, namely, 11510720 + 11510721.

It is an arithmetic number, because the mean of its divisors is an integer number (11510721).

Almost surely, 2^23021441 is an apocalyptic number.

It is an amenable number.

23021441 is a deficient number, since it is larger than the sum of its proper divisors (1).

23021441 is an equidigital number, since it uses as much as digits as its factorization.

23021441 is an odious number, because the sum of its binary digits is odd.

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

The square root of 23021441 is about 4798.0663813666. The cubic root of 23021441 is about 284.4750406146.

Adding to 23021441 its reverse (14412032), we get a palindrome (37433473).

The spelling of 23021441 in words is "twenty-three million, twenty-one thousand, four hundred forty-one".