1117887111 has 12 divisors (see below), whose sum is σ = 1761519240. Its totient is φ = 677507280.

The previous prime is 1117887079. The next prime is 1117887137.

1117887111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1117887111 - 2⁵ = 1117887079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117887011) 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 11 ways as a sum of consecutive naturals, for example, 5645796 + ... + 5645993.

It is an arithmetic number, because the mean of its divisors is an integer number (146793270).

Almost surely, 2^1117887111 is an apocalyptic number.

1117887111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1117887111 is a deficient number, since it is larger than the sum of its proper divisors (643632129).

1117887111 is a wasteful number, since it uses less digits than its factorization.

1117887111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11291806 (or 11291803 counting only the distinct ones).

The product of its digits is 3136, while the sum is 36.

The square root of 1117887111 is about 33434.8188420395. The cubic root of 1117887111 is about 1037.8453638242.

It can be divided in two parts, 11178 and 87111, that added together give a palindrome (98289).

The spelling of 1117887111 in words is "one billion, one hundred seventeen million, eight hundred eighty-seven thousand, one hundred eleven".