23620213 has 2 divisors, whose sum is σ = 23620214. Its totient is φ = 23620212.

The previous prime is 23620199. The next prime is 23620229. The reversal of 23620213 is 31202632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18130564 + 5489649 = 4258^2 + 2343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23620213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23620243) 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, 11810106 + 11810107.

It is an arithmetic number, because the mean of its divisors is an integer number (11810107).

Almost surely, 2^23620213 is an apocalyptic number.

It is an amenable number.

23620213 is a deficient number, since it is larger than the sum of its proper divisors (1).

23620213 is an equidigital number, since it uses as much as digits as its factorization.

23620213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 23620213 is about 4860.0630654344. The cubic root of 23620213 is about 286.9202957859.

Adding to 23620213 its reverse (31202632), we get a palindrome (54822845).

It can be divided in two parts, 236 and 20213, that added together give a square (20449 = 143²).

The spelling of 23620213 in words is "twenty-three million, six hundred twenty thousand, two hundred thirteen".