1311343101 has 20 divisors (see below), whose sum is σ = 1977240672. Its totient is φ = 866052648.

The previous prime is 1311343087. The next prime is 1311343123. The reversal of 1311343101 is 1013431131.

1311343101 is a `hidden beast` number, since 1 + 311 + 343 + 10 + 1 = 666.

1311343101 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1311343101 - 2⁵ = 1311343069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311343181) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 66985 + ... + 84318.

Almost surely, 2^1311343101 is an apocalyptic number.

It is an amenable number.

1311343101 is a deficient number, since it is larger than the sum of its proper divisors (665897571).

1311343101 is a wasteful number, since it uses less digits than its factorization.

1311343101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151422 (or 151413 counting only the distinct ones).

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

The square root of 1311343101 is about 36212.4716223568. The cubic root of 1311343101 is about 1094.5579976255.

Adding to 1311343101 its reverse (1013431131), we get a palindrome (2324774232).

The spelling of 1311343101 in words is "one billion, three hundred eleven million, three hundred forty-three thousand, one hundred one".