23221131005 has 8 divisors (see below), whose sum is σ = 28247074872. Its totient is φ = 18322426368.

The previous prime is 23221130981. The next prime is 23221131007. The reversal of 23221131005 is 50013112232.

It can be written as a sum of positive squares in 4 ways, for example, as 1636526116 + 21584604889 = 40454^2 + 146917^2 .

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 23221131005 - 2⁸ = 23221130749 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 (23221131007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31809404 + ... + 31810133.

It is an arithmetic number, because the mean of its divisors is an integer number (3530884359).

Almost surely, 2^23221131005 is an apocalyptic number.

It is an amenable number.

23221131005 is a deficient number, since it is larger than the sum of its proper divisors (5025943867).

23221131005 is an equidigital number, since it uses as much as digits as its factorization.

23221131005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63619615.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 23221131005 its reverse (50013112232), we get a palindrome (73234243237).

The spelling of 23221131005 in words is "twenty-three billion, two hundred twenty-one million, one hundred thirty-one thousand, five".