23130320121 has 8 divisors (see below), whose sum is σ = 34267140960. Its totient is φ = 15420213396.

The previous prime is 23130320117. The next prime is 23130320123. The reversal of 23130320121 is 12102303132.

It is not a de Polignac number, because 23130320121 - 2² = 23130320117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23130320094 and 23130320103.

It is not an unprimeable number, because it can be changed into a prime (23130320123) 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, 428339235 + ... + 428339288.

It is an arithmetic number, because the mean of its divisors is an integer number (4283392620).

Almost surely, 2^23130320121 is an apocalyptic number.

It is an amenable number.

23130320121 is a deficient number, since it is larger than the sum of its proper divisors (11136820839).

23130320121 is an equidigital number, since it uses as much as digits as its factorization.

23130320121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856678532 (or 856678526 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23130320121 its reverse (12102303132), we get a palindrome (35232623253).

The spelling of 23130320121 in words is "twenty-three billion, one hundred thirty million, three hundred twenty thousand, one hundred twenty-one".