135540203 has 2 divisors, whose sum is σ = 135540204. Its totient is φ = 135540202.

The previous prime is 135540179. The next prime is 135540299. The reversal of 135540203 is 302045531.

It is a weak prime.

It is an emirp because it is prime and its reverse (302045531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135540203 - 2⁸ = 135539947 is a prime.

It is a super-2 number, since 2×135540203² = 36742293258562418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135540103) 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, 67770101 + 67770102.

It is an arithmetic number, because the mean of its divisors is an integer number (67770102).

Almost surely, 2^135540203 is an apocalyptic number.

135540203 is a deficient number, since it is larger than the sum of its proper divisors (1).

135540203 is an equidigital number, since it uses as much as digits as its factorization.

135540203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 135540203 is about 11642.1734654660. The cubic root of 135540203 is about 513.6761208619.

Adding to 135540203 its reverse (302045531), we get a palindrome (437585734).

The spelling of 135540203 in words is "one hundred thirty-five million, five hundred forty thousand, two hundred three".