653128103 has 2 divisors, whose sum is σ = 653128104. Its totient is φ = 653128102.

The previous prime is 653128061. The next prime is 653128139. The reversal of 653128103 is 301821356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 653128103 - 2⁶ = 653128039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653128603) 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, 326564051 + 326564052.

It is an arithmetic number, because the mean of its divisors is an integer number (326564052).

Almost surely, 2^653128103 is an apocalyptic number.

653128103 is a deficient number, since it is larger than the sum of its proper divisors (1).

653128103 is an equidigital number, since it uses as much as digits as its factorization.

653128103 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 29.

The square root of 653128103 is about 25556.3710843304. The cubic root of 653128103 is about 867.6264643011.

Adding to 653128103 its reverse (301821356), we get a palindrome (954949459).

The spelling of 653128103 in words is "six hundred fifty-three million, one hundred twenty-eight thousand, one hundred three".