101887 has 4 divisors (see below), whose sum is σ = 102760. Its totient is φ = 101016.

The previous prime is 101879. The next prime is 101891. The reversal of 101887 is 788101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 788101 = 19 ⋅41479.

It is a cyclic number.

It is not a de Polignac number, because 101887 - 2³ = 101879 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101807) 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, 228 + ... + 505.

It is an arithmetic number, because the mean of its divisors is an integer number (25690).

2¹⁰¹⁸⁸⁷ is an apocalyptic number.

101887 is a deficient number, since it is larger than the sum of its proper divisors (873).

101887 is an equidigital number, since it uses as much as digits as its factorization.

101887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 101887 is about 319.1974310674. The cubic root of 101887 is about 46.7060268837.

Adding to 101887 its reverse (788101), we get a palindrome (889988).

The spelling of 101887 in words is "one hundred one thousand, eight hundred eighty-seven".