23201120309 has 2 divisors, whose sum is σ = 23201120310. Its totient is φ = 23201120308.

The previous prime is 23201120287. The next prime is 23201120329. The reversal of 23201120309 is 90302110232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11755330084 + 11445790225 = 108422^2 + 106985^2 .

It is a cyclic number.

It is not a de Polignac number, because 23201120309 - 2⁸ = 23201120053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23201120329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11600560154 + 11600560155.

It is an arithmetic number, because the mean of its divisors is an integer number (11600560155).

Almost surely, 2^23201120309 is an apocalyptic number.

It is an amenable number.

23201120309 is a deficient number, since it is larger than the sum of its proper divisors (1).

23201120309 is an equidigital number, since it uses as much as digits as its factorization.

23201120309 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 23201120309 in words is "twenty-three billion, two hundred one million, one hundred twenty thousand, three hundred nine".