135571903 has 2 divisors, whose sum is σ = 135571904. Its totient is φ = 135571902.

The previous prime is 135571901. The next prime is 135571907. The reversal of 135571903 is 309175531.

135571903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135571903 - 2¹ = 135571901 is a prime.

Together with 135571901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135571901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67785951 + 67785952.

It is an arithmetic number, because the mean of its divisors is an integer number (67785952).

Almost surely, 2^135571903 is an apocalyptic number.

135571903 is a deficient number, since it is larger than the sum of its proper divisors (1).

135571903 is an equidigital number, since it uses as much as digits as its factorization.

135571903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14175, while the sum is 34.

The square root of 135571903 is about 11643.5348155103. The cubic root of 135571903 is about 513.7161637505.

The spelling of 135571903 in words is "one hundred thirty-five million, five hundred seventy-one thousand, nine hundred three".