23101322009 has 2 divisors, whose sum is σ = 23101322010. Its totient is φ = 23101322008.

The previous prime is 23101321909. The next prime is 23101322011. The reversal of 23101322009 is 90022310132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21704655625 + 1396666384 = 147325^2 + 37372^2 .

It is a cyclic number.

It is not a de Polignac number, because 23101322009 - 2⁸ = 23101321753 is a prime.

Together with 23101322011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23101322099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11550661004 + 11550661005.

It is an arithmetic number, because the mean of its divisors is an integer number (11550661005).

Almost surely, 2^23101322009 is an apocalyptic number.

It is an amenable number.

23101322009 is a deficient number, since it is larger than the sum of its proper divisors (1).

23101322009 is an equidigital number, since it uses as much as digits as its factorization.

23101322009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 23101322009 in words is "twenty-three billion, one hundred one million, three hundred twenty-two thousand, nine".