100101287 has 16 divisors (see below), whose sum is σ = 124522272. Its totient is φ = 79057920.

The previous prime is 100101277. The next prime is 100101289. The reversal of 100101287 is 782101001.

It is a cyclic number.

It is not a de Polignac number, because 100101287 - 2⁶ = 100101223 is a prime.

It is a Duffinian number.

100101287 is a modest number, since divided by 1287 gives 1001 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100101289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18158 + ... + 23019.

It is an arithmetic number, because the mean of its divisors is an integer number (7782642).

Almost surely, 2^100101287 is an apocalyptic number.

100101287 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

100101287 is a deficient number, since it is larger than the sum of its proper divisors (24420985).

100101287 is a wasteful number, since it uses less digits than its factorization.

100101287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41218.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 100101287 is about 10005.0630682670. The cubic root of 100101287 is about 464.3155413512.

Adding to 100101287 its reverse (782101001), we get a palindrome (882202288).

The spelling of 100101287 in words is "one hundred million, one hundred one thousand, two hundred eighty-seven".