1116231917 has 4 divisors (see below), whose sum is σ = 1181892636. Its totient is φ = 1050571200.

The previous prime is 1116231877. The next prime is 1116231943. The reversal of 1116231917 is 7191326111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 901140361 + 215091556 = 30019^2 + 14666^2 .

It is a cyclic number.

It is not a de Polignac number, because 1116231917 - 2¹⁰ = 1116230893 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 (1116231217) 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, 32830334 + ... + 32830367.

It is an arithmetic number, because the mean of its divisors is an integer number (295473159).

Almost surely, 2^1116231917 is an apocalyptic number.

1116231917 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1116231917 is a deficient number, since it is larger than the sum of its proper divisors (65660719).

1116231917 is an equidigital number, since it uses as much as digits as its factorization.

1116231917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65660718.

The product of its digits is 2268, while the sum is 32.

The square root of 1116231917 is about 33410.0571235668. The cubic root of 1116231917 is about 1037.3328839458.

The spelling of 1116231917 in words is "one billion, one hundred sixteen million, two hundred thirty-one thousand, nine hundred seventeen".