135203903 has 2 divisors, whose sum is σ = 135203904. Its totient is φ = 135203902.

The previous prime is 135203897. The next prime is 135203933. The reversal of 135203903 is 309302531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135203903 - 2¹² = 135199807 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135203933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67601951 + 67601952.

It is an arithmetic number, because the mean of its divisors is an integer number (67601952).

Almost surely, 2^135203903 is an apocalyptic number.

135203903 is a deficient number, since it is larger than the sum of its proper divisors (1).

135203903 is an equidigital number, since it uses as much as digits as its factorization.

135203903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 135203903 is about 11627.7213158899. The cubic root of 135203903 is about 513.2509275809.

The spelling of 135203903 in words is "one hundred thirty-five million, two hundred three thousand, nine hundred three".