3183861 has 4 divisors (see below), whose sum is σ = 4245152. Its totient is φ = 2122572.

The previous prime is 3183857. The next prime is 3183863. The reversal of 3183861 is 1683813.

3183861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3183861 - 2² = 3183857 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

3183861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3183863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530641 + ... + 530646.

It is an arithmetic number, because the mean of its divisors is an integer number (1061288).

Almost surely, 2^3183861 is an apocalyptic number.

It is an amenable number.

3183861 is a deficient number, since it is larger than the sum of its proper divisors (1061291).

3183861 is a wasteful number, since it uses less digits than its factorization.

3183861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061290.

The product of its digits is 3456, while the sum is 30.

The square root of 3183861 is about 1784.3376922545. The cubic root of 3183861 is about 147.1131065266.

The spelling of 3183861 in words is "three million, one hundred eighty-three thousand, eight hundred sixty-one".