3161943 has 8 divisors (see below), whose sum is σ = 4684400. Its totient is φ = 2107944.

The previous prime is 3161897. The next prime is 3161953. The reversal of 3161943 is 3491613.

3161943 is a `hidden beast` number, since 3 + 1 + 619 + 43 = 666.

It is not a de Polignac number, because 3161943 - 2¹⁰ = 3160919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 117109 = 3161943 / (3 + 1 + 6 + 1 + 9 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58528 + ... + 58581.

It is an arithmetic number, because the mean of its divisors is an integer number (585550).

Almost surely, 2^3161943 is an apocalyptic number.

3161943 is a deficient number, since it is larger than the sum of its proper divisors (1522457).

3161943 is a wasteful number, since it uses less digits than its factorization.

3161943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117118 (or 117112 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 3161943 is about 1778.1853109280. The cubic root of 3161943 is about 146.7747487299.

The spelling of 3161943 in words is "three million, one hundred sixty-one thousand, nine hundred forty-three".