1311535135 has 32 divisors (see below), whose sum is σ = 1715281920. Its totient is φ = 959040000.

The previous prime is 1311535133. The next prime is 1311535151. The reversal of 1311535135 is 5315351131.

It is not a de Polignac number, because 1311535135 - 2¹ = 1311535133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311535133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1746010 + ... + 1746760.

It is an arithmetic number, because the mean of its divisors is an integer number (53602560).

Almost surely, 2^1311535135 is an apocalyptic number.

1311535135 is a deficient number, since it is larger than the sum of its proper divisors (403746785).

1311535135 is a wasteful number, since it uses less digits than its factorization.

1311535135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399.

The product of its digits is 3375, while the sum is 28.

The square root of 1311535135 is about 36215.1230151162. The cubic root of 1311535135 is about 1094.6114242970.

Adding to 1311535135 its reverse (5315351131), we get a palindrome (6626886266).

The spelling of 1311535135 in words is "one billion, three hundred eleven million, five hundred thirty-five thousand, one hundred thirty-five".