23530217 has 2 divisors, whose sum is σ = 23530218. Its totient is φ = 23530216.

The previous prime is 23530211. The next prime is 23530231. The reversal of 23530217 is 71203532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22080601 + 1449616 = 4699^2 + 1204^2 .

It is a cyclic number.

It is not a de Polignac number, because 23530217 - 2²² = 19335913 is a prime.

It is a super-2 number, since 2×23530217² = 1107342224134178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23530192 and 23530201.

It is not a weakly prime, because it can be changed into another prime (23530211) 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, 11765108 + 11765109.

It is an arithmetic number, because the mean of its divisors is an integer number (11765109).

Almost surely, 2^23530217 is an apocalyptic number.

It is an amenable number.

23530217 is a deficient number, since it is larger than the sum of its proper divisors (1).

23530217 is an equidigital number, since it uses as much as digits as its factorization.

23530217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 23530217 is about 4850.7955017708. The cubic root of 23530217 is about 286.5554311231. Note that the first 3 decimals are identical.

Adding to 23530217 its reverse (71203532), we get a palindrome (94733749).

The spelling of 23530217 in words is "twenty-three million, five hundred thirty thousand, two hundred seventeen".