3071681 has 4 divisors (see below), whose sum is σ = 3076032. Its totient is φ = 3067332.

The previous prime is 3071671. The next prime is 3071693. The reversal of 3071681 is 1861703.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1861703 = 653 ⋅2851.

It is a cyclic number.

It is not a de Polignac number, because 3071681 - 2⁶ = 3071617 is a prime.

It is a super-2 number, since 2×3071681² = 18870448331522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3071681.

It is not an unprimeable number, because it can be changed into a prime (3071641) 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 3 ways as a sum of consecutive naturals, for example, 845 + ... + 2618.

It is an arithmetic number, because the mean of its divisors is an integer number (769008).

Almost surely, 2^3071681 is an apocalyptic number.

It is an amenable number.

3071681 is a deficient number, since it is larger than the sum of its proper divisors (4351).

3071681 is an equidigital number, since it uses as much as digits as its factorization.

3071681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 3071681 is about 1752.6211798332. The cubic root of 3071681 is about 145.3646154688.

The spelling of 3071681 in words is "three million, seventy-one thousand, six hundred eighty-one".