135331311 has 16 divisors (see below), whose sum is σ = 185727584. Its totient is φ = 87588864.

The previous prime is 135331307. The next prime is 135331349. The reversal of 135331311 is 113133531.

It is not a de Polignac number, because 135331311 - 2² = 135331307 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 (135331111) 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, 62991 + ... + 65103.

It is an arithmetic number, because the mean of its divisors is an integer number (11607974).

Almost surely, 2^135331311 is an apocalyptic number.

135331311 is a deficient number, since it is larger than the sum of its proper divisors (50396273).

135331311 is a wasteful number, since it uses less digits than its factorization.

135331311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730.

The product of its digits is 405, while the sum is 21.

The square root of 135331311 is about 11633.1986572911. The cubic root of 135331311 is about 513.4120958679.

Adding to 135331311 its reverse (113133531), we get a palindrome (248464842).

The spelling of 135331311 in words is "one hundred thirty-five million, three hundred thirty-one thousand, three hundred eleven".