135871903 has 2 divisors, whose sum is σ = 135871904. Its totient is φ = 135871902.

The previous prime is 135871891. The next prime is 135871921. The reversal of 135871903 is 309178531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135871903 - 2⁹ = 135871391 is a prime.

It is a super-2 number, since 2×135871903² = 36922348049682818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135871993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67935951 + 67935952.

It is an arithmetic number, because the mean of its divisors is an integer number (67935952).

Almost surely, 2^135871903 is an apocalyptic number.

135871903 is a deficient number, since it is larger than the sum of its proper divisors (1).

135871903 is an equidigital number, since it uses as much as digits as its factorization.

135871903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 135871903 is about 11656.4103822746. The cubic root of 135871903 is about 514.0948098360.

The spelling of 135871903 in words is "one hundred thirty-five million, eight hundred seventy-one thousand, nine hundred three".