3161115985 has 8 divisors (see below), whose sum is σ = 3795060456. Its totient is φ = 2527745280.

The previous prime is 3161115977. The next prime is 3161116001. The reversal of 3161115985 is 5895111613.

It can be written as a sum of positive squares in 4 ways, for example, as 345327889 + 2815788096 = 18583^2 + 53064^2 .

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

It is not a de Polignac number, because 3161115985 - 2³ = 3161115977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131224 + ... + 153433.

It is an arithmetic number, because the mean of its divisors is an integer number (474382557).

Almost surely, 2^3161115985 is an apocalyptic number.

It is an amenable number.

3161115985 is a deficient number, since it is larger than the sum of its proper divisors (633944471).

3161115985 is a wasteful number, since it uses less digits than its factorization.

3161115985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286883.

The product of its digits is 32400, while the sum is 40.

The square root of 3161115985 is about 56223.8026551033. The cubic root of 3161115985 is about 1467.6195116593.

The spelling of 3161115985 in words is "three billion, one hundred sixty-one million, one hundred fifteen thousand, nine hundred eighty-five".