23217263 has 4 divisors (see below), whose sum is σ = 23231208. Its totient is φ = 23203320.

The previous prime is 23217247. The next prime is 23217269. The reversal of 23217263 is 36271232.

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

It is a cyclic number.

It is not a de Polignac number, because 23217263 - 2⁴ = 23217247 is a prime.

It is a super-2 number, since 2×23217263² = 1078082602422338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23217269) 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, 4073 + ... + 7938.

It is an arithmetic number, because the mean of its divisors is an integer number (5807802).

Almost surely, 2^23217263 is an apocalyptic number.

23217263 is a deficient number, since it is larger than the sum of its proper divisors (13945).

23217263 is a wasteful number, since it uses less digits than its factorization.

23217263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13944.

The product of its digits is 3024, while the sum is 26.

The square root of 23217263 is about 4818.4295159315. The cubic root of 23217263 is about 285.2793526451.

Adding to 23217263 its reverse (36271232), we get a palindrome (59488495).

The spelling of 23217263 in words is "twenty-three million, two hundred seventeen thousand, two hundred sixty-three".