1311011109 has 16 divisors (see below), whose sum is σ = 2026684800. Its totient is φ = 836006688.

The previous prime is 1311011101. The next prime is 1311011113. The reversal of 1311011109 is 9011101131.

It is not a de Polignac number, because 1311011109 - 2³ = 1311011101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311011091 and 1311011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311011101) 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 15 ways as a sum of consecutive naturals, for example, 1054944 + ... + 1056185.

It is an arithmetic number, because the mean of its divisors is an integer number (126667800).

Almost surely, 2^1311011109 is an apocalyptic number.

It is an amenable number.

1311011109 is a deficient number, since it is larger than the sum of its proper divisors (715673691).

1311011109 is a wasteful number, since it uses less digits than its factorization.

1311011109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111161 (or 2111155 counting only the distinct ones).

The product of its (nonzero) digits is 27, while the sum is 18.

The square root of 1311011109 is about 36207.8873865902. The cubic root of 1311011109 is about 1094.4656202838.

The spelling of 1311011109 in words is "one billion, three hundred eleven million, eleven thousand, one hundred nine".