23271217 has 2 divisors, whose sum is σ = 23271218. Its totient is φ = 23271216.

The previous prime is 23271179. The next prime is 23271229. The reversal of 23271217 is 71217232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22810176 + 461041 = 4776^2 + 679^2 .

It is a cyclic number.

It is not a de Polignac number, because 23271217 - 2⁷ = 23271089 is a prime.

It is a super-2 number, since 2×23271217² = 1083099081322178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23271191 and 23271200.

It is not a weakly prime, because it can be changed into another prime (23271247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11635608 + 11635609.

It is an arithmetic number, because the mean of its divisors is an integer number (11635609).

Almost surely, 2^23271217 is an apocalyptic number.

It is an amenable number.

23271217 is a deficient number, since it is larger than the sum of its proper divisors (1).

23271217 is an equidigital number, since it uses as much as digits as its factorization.

23271217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 25.

The square root of 23271217 is about 4824.0249792056. The cubic root of 23271217 is about 285.5001661344.

Adding to 23271217 its reverse (71217232), we get a palindrome (94488449).

The spelling of 23271217 in words is "twenty-three million, two hundred seventy-one thousand, two hundred seventeen".