135630247 has 2 divisors, whose sum is σ = 135630248. Its totient is φ = 135630246.

The previous prime is 135630211. The next prime is 135630293. The reversal of 135630247 is 742036531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135630247 - 2⁷ = 135630119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135631247) 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, 67815123 + 67815124.

It is an arithmetic number, because the mean of its divisors is an integer number (67815124).

Almost surely, 2^135630247 is an apocalyptic number.

135630247 is a deficient number, since it is larger than the sum of its proper divisors (1).

135630247 is an equidigital number, since it uses as much as digits as its factorization.

135630247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 135630247 is about 11646.0399707368. The cubic root of 135630247 is about 513.7898465630.

Adding to 135630247 its reverse (742036531), we get a palindrome (877666778).

The spelling of 135630247 in words is "one hundred thirty-five million, six hundred thirty thousand, two hundred forty-seven".