23020213309 has 2 divisors, whose sum is σ = 23020213310. Its totient is φ = 23020213308.

The previous prime is 23020213277. The next prime is 23020213361. The reversal of 23020213309 is 90331202032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23019565284 + 648025 = 151722^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 23020213309 - 2⁵ = 23020213277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23020213109) 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, 11510106654 + 11510106655.

It is an arithmetic number, because the mean of its divisors is an integer number (11510106655).

Almost surely, 2^23020213309 is an apocalyptic number.

It is an amenable number.

23020213309 is a deficient number, since it is larger than the sum of its proper divisors (1).

23020213309 is an equidigital number, since it uses as much as digits as its factorization.

23020213309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The spelling of 23020213309 in words is "twenty-three billion, twenty million, two hundred thirteen thousand, three hundred nine".