23110321909 has 2 divisors, whose sum is σ = 23110321910. Its totient is φ = 23110321908.

The previous prime is 23110321907. The next prime is 23110321933. The reversal of 23110321909 is 90912301132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21276598225 + 1833723684 = 145865^2 + 42822^2 .

It is a cyclic number.

It is not a de Polignac number, because 23110321909 - 2¹ = 23110321907 is a prime.

Together with 23110321907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23110321903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11555160954 + 11555160955.

It is an arithmetic number, because the mean of its divisors is an integer number (11555160955).

Almost surely, 2^23110321909 is an apocalyptic number.

It is an amenable number.

23110321909 is a deficient number, since it is larger than the sum of its proper divisors (1).

23110321909 is an equidigital number, since it uses as much as digits as its factorization.

23110321909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 23110321909 in words is "twenty-three billion, one hundred ten million, three hundred twenty-one thousand, nine hundred nine".