1135215311 has 4 divisors (see below), whose sum is σ = 1135414224. Its totient is φ = 1135016400.

The previous prime is 1135215253. The next prime is 1135215337. The reversal of 1135215311 is 1135125311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1135215311 - 2³⁰ = 61473487 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 (1135215391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90635 + ... + 102396.

It is an arithmetic number, because the mean of its divisors is an integer number (283853556).

Almost surely, 2^1135215311 is an apocalyptic number.

1135215311 is a deficient number, since it is larger than the sum of its proper divisors (198913).

1135215311 is an equidigital number, since it uses as much as digits as its factorization.

1135215311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198912.

The product of its digits is 450, while the sum is 23.

The square root of 1135215311 is about 33692.9564004111. The cubic root of 1135215311 is about 1043.1803872222.

Subtracting from 1135215311 its reverse (1135125311), we obtain a square (90000 = 300²).

The spelling of 1135215311 in words is "one billion, one hundred thirty-five million, two hundred fifteen thousand, three hundred eleven".