2103857 has 8 divisors (see below), whose sum is σ = 2469696. Its totient is φ = 1754352.

The previous prime is 2103839. The next prime is 2103859. The reversal of 2103857 is 7583012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2103857 - 2⁶ = 2103793 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 (2103859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3803 + ... + 4320.

It is an arithmetic number, because the mean of its divisors is an integer number (308712).

2^2103857 is an apocalyptic number.

It is an amenable number.

2103857 is a deficient number, since it is larger than the sum of its proper divisors (365839).

2103857 is an equidigital number, since it uses as much as digits as its factorization.

2103857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8167.

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

The square root of 2103857 is about 1450.4678555556. The cubic root of 2103857 is about 128.1362684517.

Adding to 2103857 its reverse (7583012), we get a palindrome (9686869).

The spelling of 2103857 in words is "two million, one hundred three thousand, eight hundred fifty-seven".