23651213 has 2 divisors, whose sum is σ = 23651214. Its totient is φ = 23651212.

The previous prime is 23651209. The next prime is 23651227. The reversal of 23651213 is 31215632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22401289 + 1249924 = 4733^2 + 1118^2 .

It is a cyclic number.

It is not a de Polignac number, because 23651213 - 2² = 23651209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23651263) 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, 11825606 + 11825607.

It is an arithmetic number, because the mean of its divisors is an integer number (11825607).

Almost surely, 2^23651213 is an apocalyptic number.

It is an amenable number.

23651213 is a deficient number, since it is larger than the sum of its proper divisors (1).

23651213 is an equidigital number, since it uses as much as digits as its factorization.

23651213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 23651213 is about 4863.2512787229. The cubic root of 23651213 is about 287.0457623491.

Adding to 23651213 its reverse (31215632), we get a palindrome (54866845).

The spelling of 23651213 in words is "twenty-three million, six hundred fifty-one thousand, two hundred thirteen".