23221463 has 4 divisors (see below), whose sum is σ = 23568120. Its totient is φ = 22874808.

The previous prime is 23221447. The next prime is 23221481. The reversal of 23221463 is 36412232.

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 23221463 - 2⁴ = 23221447 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 (23221063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173228 + ... + 173361.

It is an arithmetic number, because the mean of its divisors is an integer number (5892030).

Almost surely, 2^23221463 is an apocalyptic number.

23221463 is a deficient number, since it is larger than the sum of its proper divisors (346657).

23221463 is an equidigital number, since it uses as much as digits as its factorization.

23221463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346656.

The product of its digits is 1728, while the sum is 23.

The square root of 23221463 is about 4818.8653228743. The cubic root of 23221463 is about 285.2965539411.

Adding to 23221463 its reverse (36412232), we get a palindrome (59633695).

The spelling of 23221463 in words is "twenty-three million, two hundred twenty-one thousand, four hundred sixty-three".