1117323887 has 4 divisors (see below), whose sum is σ = 1136261640. Its totient is φ = 1098386136.

The previous prime is 1117323881. The next prime is 1117323943. The reversal of 1117323887 is 7883237111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7883237111 = 1249 ⋅6311639.

It is a cyclic number.

It is not a de Polignac number, because 1117323887 - 2⁸ = 1117323631 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 (1117323881) 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 3 ways as a sum of consecutive naturals, for example, 9468788 + ... + 9468905.

It is an arithmetic number, because the mean of its divisors is an integer number (284065410).

Almost surely, 2^1117323887 is an apocalyptic number.

1117323887 is a deficient number, since it is larger than the sum of its proper divisors (18937753).

1117323887 is an equidigital number, since it uses as much as digits as its factorization.

1117323887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18937752.

The product of its digits is 56448, while the sum is 41.

The square root of 1117323887 is about 33426.3950643799. The cubic root of 1117323887 is about 1037.6710356629.

The spelling of 1117323887 in words is "one billion, one hundred seventeen million, three hundred twenty-three thousand, eight hundred eighty-seven".