653120243 has 2 divisors, whose sum is σ = 653120244. Its totient is φ = 653120242.

The previous prime is 653120227. The next prime is 653120257. The reversal of 653120243 is 342021356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 653120243 - 2⁴ = 653120227 is a prime.

It is not a weakly prime, because it can be changed into another prime (653110243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326560121 + 326560122.

It is an arithmetic number, because the mean of its divisors is an integer number (326560122).

Almost surely, 2^653120243 is an apocalyptic number.

653120243 is a deficient number, since it is larger than the sum of its proper divisors (1).

653120243 is an equidigital number, since it uses as much as digits as its factorization.

653120243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 653120243 is about 25556.2173061664. The cubic root of 653120243 is about 867.6229838347.

Adding to 653120243 its reverse (342021356), we get a palindrome (995141599).

The spelling of 653120243 in words is "six hundred fifty-three million, one hundred twenty thousand, two hundred forty-three".