1311134211 has 6 divisors (see below), whose sum is σ = 1893860540. Its totient is φ = 874089468.

The previous prime is 1311134191. The next prime is 1311134213. The reversal of 1311134211 is 1124311131.

It is a happy number.

1311134211 is a `hidden beast` number, since 1 + 311 + 1 + 342 + 11 = 666.

It is not a de Polignac number, because 1311134211 - 2⁵ = 1311134179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311134213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72840781 + ... + 72840798.

Almost surely, 2^1311134211 is an apocalyptic number.

1311134211 is a deficient number, since it is larger than the sum of its proper divisors (582726329).

1311134211 is a wasteful number, since it uses less digits than its factorization.

1311134211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145681585 (or 145681582 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1311134211 is about 36209.5872801666. The cubic root of 1311134211 is about 1094.4998754449.

Adding to 1311134211 its reverse (1124311131), we get a palindrome (2435445342).

The spelling of 1311134211 in words is "one billion, three hundred eleven million, one hundred thirty-four thousand, two hundred eleven".