3120857 has 2 divisors, whose sum is σ = 3120858. Its totient is φ = 3120856.

The previous prime is 3120841. The next prime is 3120881. The reversal of 3120857 is 7580213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2886601 + 234256 = 1699^2 + 484^2 .

It is a cyclic number.

It is not a de Polignac number, because 3120857 - 2⁴ = 3120841 is a prime.

It is not a weakly prime, because it can be changed into another prime (3120827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560428 + 1560429.

It is an arithmetic number, because the mean of its divisors is an integer number (1560429).

Almost surely, 2^3120857 is an apocalyptic number.

It is an amenable number.

3120857 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120857 is an equidigital number, since it uses as much as digits as its factorization.

3120857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 3120857 is about 1766.5947469638. The cubic root of 3120857 is about 146.1362492416.

The spelling of 3120857 in words is "three million, one hundred twenty thousand, eight hundred fifty-seven".