135240311 has 16 divisors (see below), whose sum is σ = 142985760. Its totient is φ = 127733760.

The previous prime is 135240293. The next prime is 135240317. The reversal of 135240311 is 113042531.

It is a cyclic number.

It is not a de Polignac number, because 135240311 - 2⁶ = 135240247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135240317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408416 + ... + 408746.

It is an arithmetic number, because the mean of its divisors is an integer number (8936610).

Almost surely, 2^135240311 is an apocalyptic number.

135240311 is a deficient number, since it is larger than the sum of its proper divisors (7745449).

135240311 is a wasteful number, since it uses less digits than its factorization.

135240311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 135240311 is about 11629.2867795063. The cubic root of 135240311 is about 513.2969932203.

Adding to 135240311 its reverse (113042531), we get a palindrome (248282842).

The spelling of 135240311 in words is "one hundred thirty-five million, two hundred forty thousand, three hundred eleven".