23166287 has 2 divisors, whose sum is σ = 23166288. Its totient is φ = 23166286.

The previous prime is 23166281. The next prime is 23166317. The reversal of 23166287 is 78266132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23166287 - 2¹⁸ = 22904143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23166281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11583143 + 11583144.

It is an arithmetic number, because the mean of its divisors is an integer number (11583144).

Almost surely, 2^23166287 is an apocalyptic number.

23166287 is a deficient number, since it is larger than the sum of its proper divisors (1).

23166287 is an equidigital number, since it uses as much as digits as its factorization.

23166287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 23166287 is about 4813.1369188919. The cubic root of 23166287 is about 285.0704124782.

The spelling of 23166287 in words is "twenty-three million, one hundred sixty-six thousand, two hundred eighty-seven".