100330985 has 4 divisors (see below), whose sum is σ = 120397188. Its totient is φ = 80264784.

The previous prime is 100330933. The next prime is 100330999. The reversal of 100330985 is 589033001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589033001 = 103 ⋅5718767.

It can be written as a sum of positive squares in 2 ways, for example, as 10156969 + 90174016 = 3187^2 + 9496^2 .

It is a cyclic number.

It is not a de Polignac number, because 100330985 - 2⁸ = 100330729 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 10033094 + ... + 10033103.

It is an arithmetic number, because the mean of its divisors is an integer number (30099297).

Almost surely, 2^100330985 is an apocalyptic number.

It is an amenable number.

100330985 is a deficient number, since it is larger than the sum of its proper divisors (20066203).

100330985 is an equidigital number, since it uses as much as digits as its factorization.

100330985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20066202.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 100330985 is about 10016.5355787318. The cubic root of 100330985 is about 464.6704181679.

Adding to 100330985 its reverse (589033001), we get a palindrome (689363986).

The spelling of 100330985 in words is "one hundred million, three hundred thirty thousand, nine hundred eighty-five".