210330030985 has 4 divisors (see below), whose sum is σ = 252396037188. Its totient is φ = 168264024784.

The previous prime is 210330030959. The next prime is 210330030991. The reversal of 210330030985 is 589030033012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158665195584 + 51664835401 = 398328^2 + 227299^2 .

It is a cyclic number.

It is not a de Polignac number, because 210330030985 - 2⁷ = 210330030857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210330030985.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21033003094 + ... + 21033003103.

It is an arithmetic number, because the mean of its divisors is an integer number (63099009297).

Almost surely, 2^210330030985 is an apocalyptic number.

It is an amenable number.

210330030985 is a deficient number, since it is larger than the sum of its proper divisors (42066006203).

210330030985 is an equidigital number, since it uses as much as digits as its factorization.

210330030985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42066006202.

The product of its (nonzero) digits is 19440, while the sum is 34.

Adding to 210330030985 its reverse (589030033012), we get a palindrome (799360063997).

The spelling of 210330030985 in words is "two hundred ten billion, three hundred thirty million, thirty thousand, nine hundred eighty-five".