100112287 has 4 divisors (see below), whose sum is σ = 109213416. Its totient is φ = 91011160.

The previous prime is 100112281. The next prime is 100112297. The reversal of 100112287 is 782211001.

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

It is a cyclic number.

It is not a de Polignac number, because 100112287 - 2¹¹ = 100110239 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100112281) 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, 4550548 + ... + 4550569.

It is an arithmetic number, because the mean of its divisors is an integer number (27303354).

Almost surely, 2^100112287 is an apocalyptic number.

100112287 is a deficient number, since it is larger than the sum of its proper divisors (9101129).

100112287 is an equidigital number, since it uses as much as digits as its factorization.

100112287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101128.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 100112287 is about 10005.6127748379. The cubic root of 100112287 is about 464.3325484049.

Adding to 100112287 its reverse (782211001), we get a palindrome (882323288).

The spelling of 100112287 in words is "one hundred million, one hundred twelve thousand, two hundred eighty-seven".