3161985 has 16 divisors (see below), whose sum is σ = 5132160. Its totient is φ = 1662080.

The previous prime is 3161953. The next prime is 3161993. The reversal of 3161985 is 5891613.

It is not a de Polignac number, because 3161985 - 2⁵ = 3161953 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420 + ... + 2549.

It is an arithmetic number, because the mean of its divisors is an integer number (320760).

Almost surely, 2^3161985 is an apocalyptic number.

It is an amenable number.

3161985 is a deficient number, since it is larger than the sum of its proper divisors (1970175).

3161985 is a wasteful number, since it uses less digits than its factorization.

3161985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048.

The product of its digits is 6480, while the sum is 33.

The square root of 3161985 is about 1778.1971206815. The cubic root of 3161985 is about 146.7753985953.

The spelling of 3161985 in words is "three million, one hundred sixty-one thousand, nine hundred eighty-five".