23116213 has 2 divisors, whose sum is σ = 23116214. Its totient is φ = 23116212.

The previous prime is 23116211. The next prime is 23116267. The reversal of 23116213 is 31261132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22676644 + 439569 = 4762^2 + 663^2 .

It is a cyclic number.

It is not a de Polignac number, because 23116213 - 2¹ = 23116211 is a prime.

It is a super-2 number, since 2×23116213² = 1068718606922738, which contains 22 as substring.

Together with 23116211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23116211) 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, 11558106 + 11558107.

It is an arithmetic number, because the mean of its divisors is an integer number (11558107).

Almost surely, 2^23116213 is an apocalyptic number.

It is an amenable number.

23116213 is a deficient number, since it is larger than the sum of its proper divisors (1).

23116213 is an equidigital number, since it uses as much as digits as its factorization.

23116213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 23116213 is about 4807.9322998561. The cubic root of 23116213 is about 284.8648707920.

Adding to 23116213 its reverse (31261132), we get a palindrome (54377345).

The spelling of 23116213 in words is "twenty-three million, one hundred sixteen thousand, two hundred thirteen".