253128103 has 2 divisors, whose sum is σ = 253128104. Its totient is φ = 253128102.

The previous prime is 253128097. The next prime is 253128107. The reversal of 253128103 is 301821352.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253128103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253128107) 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, 126564051 + 126564052.

It is an arithmetic number, because the mean of its divisors is an integer number (126564052).

Almost surely, 2^253128103 is an apocalyptic number.

253128103 is a deficient number, since it is larger than the sum of its proper divisors (1).

253128103 is an equidigital number, since it uses as much as digits as its factorization.

253128103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 253128103 is about 15910.0000942803. Note that the first 4 decimals coincide. The cubic root of 253128103 is about 632.5770838266.

Adding to 253128103 its reverse (301821352), we get a palindrome (554949455).

The spelling of 253128103 in words is "two hundred fifty-three million, one hundred twenty-eight thousand, one hundred three".