100530985 has 16 divisors (see below), whose sum is σ = 126650880. Its totient is φ = 76504320.

The previous prime is 100530967. The next prime is 100531007. The reversal of 100530985 is 589035001.

It is not a de Polignac number, because 100530985 - 2¹¹ = 100528937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3649 + ... + 14641.

It is an arithmetic number, because the mean of its divisors is an integer number (7915680).

Almost surely, 2^100530985 is an apocalyptic number.

It is an amenable number.

100530985 is a deficient number, since it is larger than the sum of its proper divisors (26119895).

100530985 is a wasteful number, since it uses less digits than its factorization.

100530985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11088.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 100530985 is about 10026.5141001247. The cubic root of 100530985 is about 464.9789715700.

Adding to 100530985 its reverse (589035001), we get a palindrome (689565986).

The spelling of 100530985 in words is "one hundred million, five hundred thirty thousand, nine hundred eighty-five".