103943209 has 4 divisors (see below), whose sum is σ = 103998916. Its totient is φ = 103887504.

The previous prime is 103943153. The next prime is 103943239. The reversal of 103943209 is 902349301.

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 71453209 + 32490000 = 8453^2 + 5700^2 .

It is a cyclic number.

It is not a de Polignac number, because 103943209 - 2⁹ = 103942697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103943239) 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, 24954 + ... + 28819.

It is an arithmetic number, because the mean of its divisors is an integer number (25999729).

Almost surely, 2^103943209 is an apocalyptic number.

It is an amenable number.

103943209 is a deficient number, since it is larger than the sum of its proper divisors (55707).

103943209 is an equidigital number, since it uses as much as digits as its factorization.

103943209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55706.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 103943209 is about 10195.2542391056. The cubic root of 103943209 is about 470.1813228250.

The spelling of 103943209 in words is "one hundred three million, nine hundred forty-three thousand, two hundred nine".