135203687 has 2 divisors, whose sum is σ = 135203688. Its totient is φ = 135203686.

The previous prime is 135203657. The next prime is 135203693. The reversal of 135203687 is 786302531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135203687 - 2⁶ = 135203623 is a prime.

It is a Chen prime.

It is equal to p_7656353 and since 135203687 and 7656353 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135203657) 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, 67601843 + 67601844.

It is an arithmetic number, because the mean of its divisors is an integer number (67601844).

Almost surely, 2^135203687 is an apocalyptic number.

135203687 is a deficient number, since it is larger than the sum of its proper divisors (1).

135203687 is an equidigital number, since it uses as much as digits as its factorization.

135203687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 135203687 is about 11627.7120277379. The cubic root of 135203687 is about 513.2506542597.

The spelling of 135203687 in words is "one hundred thirty-five million, two hundred three thousand, six hundred eighty-seven".