23209273 has 2 divisors, whose sum is σ = 23209274. Its totient is φ = 23209272.

The previous prime is 23209237. The next prime is 23209289. The reversal of 23209273 is 37290232.

Together with previous prime (23209237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14845609 + 8363664 = 3853^2 + 2892^2 .

It is a cyclic number.

It is not a de Polignac number, because 23209273 - 2¹³ = 23201081 is a prime.

It is not a weakly prime, because it can be changed into another prime (23209073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11604636 + 11604637.

It is an arithmetic number, because the mean of its divisors is an integer number (11604637).

Almost surely, 2^23209273 is an apocalyptic number.

It is an amenable number.

23209273 is a deficient number, since it is larger than the sum of its proper divisors (1).

23209273 is an equidigital number, since it uses as much as digits as its factorization.

23209273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 23209273 is about 4817.6003362670. The cubic root of 23209273 is about 285.2466234994.

The spelling of 23209273 in words is "twenty-three million, two hundred nine thousand, two hundred seventy-three".