100117843 has 4 divisors (see below), whose sum is σ = 114420400. Its totient is φ = 85815288.

The previous prime is 100117841. The next prime is 100117847. The reversal of 100117843 is 348711001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348711001 = 47 ⋅7419383.

It is a cyclic number.

It is not a de Polignac number, because 100117843 - 2¹ = 100117841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100117841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7151268 + ... + 7151281.

It is an arithmetic number, because the mean of its divisors is an integer number (28605100).

Almost surely, 2^100117843 is an apocalyptic number.

100117843 is a deficient number, since it is larger than the sum of its proper divisors (14302557).

100117843 is an equidigital number, since it uses as much as digits as its factorization.

100117843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14302556.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 100117843 is about 10005.8904151505. The cubic root of 100117843 is about 464.3411380395.

Adding to 100117843 its reverse (348711001), we get a palindrome (448828844).

The spelling of 100117843 in words is "one hundred million, one hundred seventeen thousand, eight hundred forty-three".