100387 has 4 divisors (see below), whose sum is σ = 114736. Its totient is φ = 86040.

The previous prime is 100379. The next prime is 100391. The reversal of 100387 is 783001.

100387 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783001 = 193 ⋅4057.

It is a cyclic number.

It is not a de Polignac number, because 100387 - 2³ = 100379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100357) 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, 7164 + ... + 7177.

It is an arithmetic number, because the mean of its divisors is an integer number (28684).

2¹⁰⁰³⁸⁷ is an apocalyptic number.

100387 is a deficient number, since it is larger than the sum of its proper divisors (14349).

100387 is an equidigital number, since it uses as much as digits as its factorization.

100387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14348.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 100387 is about 316.8390758729. The cubic root of 100387 is about 46.4756877570.

Adding to 100387 its reverse (783001), we get a palindrome (883388).

The spelling of 100387 in words is "one hundred thousand, three hundred eighty-seven".