23217963 has 4 divisors (see below), whose sum is σ = 30957288. Its totient is φ = 15478640.

The previous prime is 23217959. The next prime is 23217967. The reversal of 23217963 is 36971232.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (23217959) and next prime (23217967).

It is a cyclic number.

It is not a de Polignac number, because 23217963 - 2² = 23217959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23217967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3869658 + ... + 3869663.

It is an arithmetic number, because the mean of its divisors is an integer number (7739322).

Almost surely, 2^23217963 is an apocalyptic number.

23217963 is a deficient number, since it is larger than the sum of its proper divisors (7739325).

23217963 is an equidigital number, since it uses as much as digits as its factorization.

23217963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7739324.

The product of its digits is 13608, while the sum is 33.

The square root of 23217963 is about 4818.5021531592. The cubic root of 23217963 is about 285.2822196718.

The spelling of 23217963 in words is "twenty-three million, two hundred seventeen thousand, nine hundred sixty-three".