23221263 has 16 divisors (see below), whose sum is σ = 34420736. Its totient is φ = 13828320.

The previous prime is 23221259. The next prime is 23221267. The reversal of 23221263 is 36212232.

It is an interprime number because it is at equal distance from previous prime (23221259) and next prime (23221267).

It is not a de Polignac number, because 23221263 - 2² = 23221259 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 (23221267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8395 + ... + 10812.

It is an arithmetic number, because the mean of its divisors is an integer number (2151296).

Almost surely, 2^23221263 is an apocalyptic number.

23221263 is a deficient number, since it is larger than the sum of its proper divisors (11199473).

23221263 is a wasteful number, since it uses less digits than its factorization.

23221263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19254.

The product of its digits is 864, while the sum is 21.

The square root of 23221263 is about 4818.8445710564. The cubic root of 23221263 is about 285.2957348788.

Adding to 23221263 its reverse (36212232), we get a palindrome (59433495).

The spelling of 23221263 in words is "twenty-three million, two hundred twenty-one thousand, two hundred sixty-three".