135131303 has 2 divisors, whose sum is σ = 135131304. Its totient is φ = 135131302.

The previous prime is 135131273. The next prime is 135131341. The reversal of 135131303 is 303131531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135131303 - 2¹⁰ = 135130279 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135131383) 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, 67565651 + 67565652.

It is an arithmetic number, because the mean of its divisors is an integer number (67565652).

Almost surely, 2^135131303 is an apocalyptic number.

135131303 is a deficient number, since it is larger than the sum of its proper divisors (1).

135131303 is an equidigital number, since it uses as much as digits as its factorization.

135131303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405, while the sum is 20.

The square root of 135131303 is about 11624.5990468489. The cubic root of 135131303 is about 513.1590449059.

Adding to 135131303 its reverse (303131531), we get a palindrome (438262834).

The spelling of 135131303 in words is "one hundred thirty-five million, one hundred thirty-one thousand, three hundred three".