1111311109 has 8 divisors (see below), whose sum is σ = 1142628480. Its totient is φ = 1080194400.

The previous prime is 1111311073. The next prime is 1111311133. The reversal of 1111311109 is 9011131111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111311109 - 2¹⁵ = 1111278341 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 (1111341109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38899 + ... + 61120.

It is an arithmetic number, because the mean of its divisors is an integer number (142828560).

Almost surely, 2^1111311109 is an apocalyptic number.

It is an amenable number.

1111311109 is a deficient number, since it is larger than the sum of its proper divisors (31317371).

1111311109 is a wasteful number, since it uses less digits than its factorization.

1111311109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100331.

The product of its (nonzero) digits is 27, while the sum is 19.

The square root of 1111311109 is about 33336.3331666817. Note that the first 3 decimals coincide. The cubic root of 1111311109 is about 1035.8063089172.

It can be divided in two parts, 11113 and 11109, that added together give a palindrome (22222).

The spelling of 1111311109 in words is "one billion, one hundred eleven million, three hundred eleven thousand, one hundred nine".