30999999999985 has 8 divisors (see below), whose sum is σ = 37415028902760. Its totient is φ = 24656647398144.

The previous prime is 30999999999977. The next prime is 31000000000009. The reversal of 30999999999985 is 58999999999903.

It can be written as a sum of positive squares in 4 ways, for example, as 2538553904656 + 28461446095329 = 1593284^2 + 5334927^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30999999999985 - 2³ = 30999999999977 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17919074280 + ... + 17919076009.

It is an arithmetic number, because the mean of its divisors is an integer number (4676878612845).

Almost surely, 2^{30999999999985} is an apocalyptic number.

It is an amenable number.

30999999999985 is a deficient number, since it is larger than the sum of its proper divisors (6415028902775).

30999999999985 is a wasteful number, since it uses less digits than its factorization.

30999999999985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35838150467.

The product of its (nonzero) digits is 418414128120, while the sum is 106.

The spelling of 30999999999985 in words is "thirty trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-five".