23011030309 has 2 divisors, whose sum is σ = 23011030310. Its totient is φ = 23011030308.

The previous prime is 23011030291. The next prime is 23011030423. The reversal of 23011030309 is 90303011032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22711394209 + 299636100 = 150703^2 + 17310^2 .

It is a cyclic number.

It is not a de Polignac number, because 23011030309 - 2⁷ = 23011030181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23011030309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23011030109) 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, 11505515154 + 11505515155.

It is an arithmetic number, because the mean of its divisors is an integer number (11505515155).

Almost surely, 2^23011030309 is an apocalyptic number.

It is an amenable number.

23011030309 is a deficient number, since it is larger than the sum of its proper divisors (1).

23011030309 is an equidigital number, since it uses as much as digits as its factorization.

23011030309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 22.

The spelling of 23011030309 in words is "twenty-three billion, eleven million, thirty thousand, three hundred nine".