1311343011 has 24 divisors (see below), whose sum is σ = 2122212144. Its totient is φ = 773271360.

The previous prime is 1311342983. The next prime is 1311343031. The reversal of 1311343011 is 1103431131.

1311343011 is a `hidden beast` number, since 1 + 311 + 343 + 0 + 11 = 666.

It is not a de Polignac number, because 1311343011 - 2⁶ = 1311342947 is a prime.

It is a super-2 number, since 2×1311343011² = 3439240984997092242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311343031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175336 + ... + 182661.

It is an arithmetic number, because the mean of its divisors is an integer number (88425506).

Almost surely, 2^1311343011 is an apocalyptic number.

1311343011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1311343011 is a deficient number, since it is larger than the sum of its proper divisors (810869133).

1311343011 is a wasteful number, since it uses less digits than its factorization.

1311343011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358051 (or 358048 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1311343011 is about 36212.4703796910. The cubic root of 1311343011 is about 1094.5579725850.

Adding to 1311343011 its reverse (1103431131), we get a palindrome (2414774142).

The spelling of 1311343011 in words is "one billion, three hundred eleven million, three hundred forty-three thousand, eleven".