23229831905281 has 6 divisors (see below), whose sum is σ = 24058482271382. Its totient is φ = 22428803218080.

The previous prime is 23229831905249. The next prime is 23229831905297. The reversal of 23229831905281 is 18250913892232.

It can be written as a sum of positive squares in 3 ways, for example, as 1049311360881 + 22180520544400 = 1024359^2 + 4709620^2 .

It is not a de Polignac number, because 23229831905281 - 2⁵ = 23229831905249 is a prime.

It is a super-2 number, since 2×23229831905281² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23229831905081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13810838580 + ... + 13810840261.

Almost surely, 2^{23229831905281} is an apocalyptic number.

It is an amenable number.

23229831905281 is a deficient number, since it is larger than the sum of its proper divisors (828650366101).

23229831905281 is an equidigital number, since it uses as much as digits as its factorization.

23229831905281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27621678899 (or 27621678870 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 23229831905281 in words is "twenty-three trillion, two hundred twenty-nine billion, eight hundred thirty-one million, nine hundred five thousand, two hundred eighty-one".