103857861 has 4 divisors (see below), whose sum is σ = 138477152. Its totient is φ = 69238572.

The previous prime is 103857851. The next prime is 103857889. The reversal of 103857861 is 168758301.

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 103857861 - 2⁵ = 103857829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103857841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17309641 + ... + 17309646.

It is an arithmetic number, because the mean of its divisors is an integer number (34619288).

Almost surely, 2^103857861 is an apocalyptic number.

It is an amenable number.

103857861 is a deficient number, since it is larger than the sum of its proper divisors (34619291).

103857861 is an equidigital number, since it uses as much as digits as its factorization.

103857861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34619290.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 103857861 is about 10191.0677065752. The cubic root of 103857861 is about 470.0525986101.

The spelling of 103857861 in words is "one hundred three million, eight hundred fifty-seven thousand, eight hundred sixty-one".