103071805 has 4 divisors (see below), whose sum is σ = 123686172. Its totient is φ = 82457440.

The previous prime is 103071797. The next prime is 103071821. The reversal of 103071805 is 508170301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42263001 + 60808804 = 6501^2 + 7798^2 .

It is not a de Polignac number, because 103071805 - 2³ = 103071797 is a prime.

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 103071805.

It is a congruent number.

It is an unprimeable number.

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, 10307176 + ... + 10307185.

It is an arithmetic number, because the mean of its divisors is an integer number (30921543).

Almost surely, 2^103071805 is an apocalyptic number.

It is an amenable number.

103071805 is a deficient number, since it is larger than the sum of its proper divisors (20614367).

103071805 is an equidigital number, since it uses as much as digits as its factorization.

103071805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20614366.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 103071805 is about 10152.4285272047. The cubic root of 103071805 is about 468.8637180692.

The spelling of 103071805 in words is "one hundred three million, seventy-one thousand, eight hundred five".