23217149 has 8 divisors (see below), whose sum is σ = 24001440. Its totient is φ = 22446000.

The previous prime is 23217133. The next prime is 23217151. The reversal of 23217149 is 94171232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23217149 - 2⁴ = 23217133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23217169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374 + ... + 6824.

It is an arithmetic number, because the mean of its divisors is an integer number (3000180).

Almost surely, 2^23217149 is an apocalyptic number.

It is an amenable number.

23217149 is a deficient number, since it is larger than the sum of its proper divisors (784291).

23217149 is an equidigital number, since it uses as much as digits as its factorization.

23217149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571.

The product of its digits is 3024, while the sum is 29.

The square root of 23217149 is about 4818.4176863365. The cubic root of 23217149 is about 285.2788857239.

The spelling of 23217149 in words is "twenty-three million, two hundred seventeen thousand, one hundred forty-nine".