23012219 has 2 divisors, whose sum is σ = 23012220. Its totient is φ = 23012218.

The previous prime is 23012191. The next prime is 23012221. The reversal of 23012219 is 91221032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23012219 - 2¹⁶ = 22946683 is a prime.

It is a super-2 number, since 2×23012219² = 1059124446607922, which contains 22 as substring.

Together with 23012221, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23012219.

It is not a weakly prime, because it can be changed into another prime (23012239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11506109 + 11506110.

It is an arithmetic number, because the mean of its divisors is an integer number (11506110).

Almost surely, 2^23012219 is an apocalyptic number.

23012219 is a deficient number, since it is larger than the sum of its proper divisors (1).

23012219 is an equidigital number, since it uses as much as digits as its factorization.

23012219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 23012219 is about 4797.1052729745. The cubic root of 23012219 is about 284.4370502443.

The spelling of 23012219 in words is "twenty-three million, twelve thousand, two hundred nineteen".