3117857 has 4 divisors (see below), whose sum is σ = 3253440. Its totient is φ = 2982276.

The previous prime is 3117853. The next prime is 3117889. The reversal of 3117857 is 7587113.

3117857 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, and also an emirpimes, since its reverse is a distinct semiprime: 7587113 = 83 ⋅91411.

It is a cyclic number.

It is not a de Polignac number, because 3117857 - 2² = 3117853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3117853) 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, 67757 + ... + 67802.

It is an arithmetic number, because the mean of its divisors is an integer number (813360).

Almost surely, 2^3117857 is an apocalyptic number.

It is an amenable number.

3117857 is a deficient number, since it is larger than the sum of its proper divisors (135583).

3117857 is a wasteful number, since it uses less digits than its factorization.

3117857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135582.

The product of its digits is 5880, while the sum is 32.

The square root of 3117857 is about 1765.7454516436. The cubic root of 3117857 is about 146.0894085501.

The spelling of 3117857 in words is "three million, one hundred seventeen thousand, eight hundred fifty-seven".