23271761 has 2 divisors, whose sum is σ = 23271762. Its totient is φ = 23271760.

The previous prime is 23271727. The next prime is 23271763. The reversal of 23271761 is 16717232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20611600 + 2660161 = 4540^2 + 1631^2 .

It is a cyclic number.

It is not a de Polignac number, because 23271761 - 2⁶ = 23271697 is a prime.

It is a super-2 number, since 2×23271761² = 1083149720082242, which contains 22 as substring.

Together with 23271763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23271763) 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, 11635880 + 11635881.

It is an arithmetic number, because the mean of its divisors is an integer number (11635881).

Almost surely, 2^23271761 is an apocalyptic number.

It is an amenable number.

23271761 is a deficient number, since it is larger than the sum of its proper divisors (1).

23271761 is an equidigital number, since it uses as much as digits as its factorization.

23271761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 29.

The square root of 23271761 is about 4824.0813633271. The cubic root of 23271761 is about 285.5023907836.

Adding to 23271761 its reverse (16717232), we get a palindrome (39988993).

The spelling of 23271761 in words is "twenty-three million, two hundred seventy-one thousand, seven hundred sixty-one".