23123133109 has 2 divisors, whose sum is σ = 23123133110. Its totient is φ = 23123133108.

The previous prime is 23123133097. The next prime is 23123133127. The reversal of 23123133109 is 90133132132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22095930609 + 1027202500 = 148647^2 + 32050^2 .

It is a cyclic number.

It is not a de Polignac number, because 23123133109 - 2¹³ = 23123124917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23123133139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11561566554 + 11561566555.

It is an arithmetic number, because the mean of its divisors is an integer number (11561566555).

Almost surely, 2^23123133109 is an apocalyptic number.

It is an amenable number.

23123133109 is a deficient number, since it is larger than the sum of its proper divisors (1).

23123133109 is an equidigital number, since it uses as much as digits as its factorization.

23123133109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 23123133109 in words is "twenty-three billion, one hundred twenty-three million, one hundred thirty-three thousand, one hundred nine".