23261761 has 2 divisors, whose sum is σ = 23261762. Its totient is φ = 23261760.

The previous prime is 23261759. The next prime is 23261779. The reversal of 23261761 is 16716232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22743361 + 518400 = 4769^2 + 720^2 .

It is a cyclic number.

It is not a de Polignac number, because 23261761 - 2¹ = 23261759 is a prime.

It is a super-2 number, since 2×23261761² = 1082219049642242, which contains 22 as substring.

Together with 23261759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23262761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11630880 + 11630881.

It is an arithmetic number, because the mean of its divisors is an integer number (11630881).

Almost surely, 2^23261761 is an apocalyptic number.

It is an amenable number.

23261761 is a deficient number, since it is larger than the sum of its proper divisors (1).

23261761 is an equidigital number, since it uses as much as digits as its factorization.

23261761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 23261761 is about 4823.0447851953. The cubic root of 23261761 is about 285.4614909573.

Adding to 23261761 its reverse (16716232), we get a palindrome (39977993).

The spelling of 23261761 in words is "twenty-three million, two hundred sixty-one thousand, seven hundred sixty-one".