1117311587 has 16 divisors (see below), whose sum is σ = 1423203840. Its totient is φ = 853918848.

The previous prime is 1117311557. The next prime is 1117311619. The reversal of 1117311587 is 7851137111.

It is a cyclic number.

It is not a de Polignac number, because 1117311587 - 2¹⁴ = 1117295203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1117311557) 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, 244823 + ... + 249344.

It is an arithmetic number, because the mean of its divisors is an integer number (88950240).

Almost surely, 2^1117311587 is an apocalyptic number.

1117311587 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1117311587 is a deficient number, since it is larger than the sum of its proper divisors (305892253).

1117311587 is a wasteful number, since it uses less digits than its factorization.

1117311587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494210.

The product of its digits is 5880, while the sum is 35.

The square root of 1117311587 is about 33426.2110775361. The cubic root of 1117311587 is about 1037.6672279336.

Adding to 1117311587 its reverse (7851137111), we get a palindrome (8968448698).

The spelling of 1117311587 in words is "one billion, one hundred seventeen million, three hundred eleven thousand, five hundred eighty-seven".