103304405 has 4 divisors (see below), whose sum is σ = 123965292. Its totient is φ = 82643520.

The previous prime is 103304389. The next prime is 103304437. The reversal of 103304405 is 504403301.

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 69872881 + 33431524 = 8359^2 + 5782^2 .

It is not a de Polignac number, because 103304405 - 2⁴ = 103304389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10330436 + ... + 10330445.

It is an arithmetic number, because the mean of its divisors is an integer number (30991323).

Almost surely, 2^103304405 is an apocalyptic number.

It is an amenable number.

103304405 is a deficient number, since it is larger than the sum of its proper divisors (20660887).

103304405 is an equidigital number, since it uses as much as digits as its factorization.

103304405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20660886.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 103304405 is about 10163.8774589228. The cubic root of 103304405 is about 469.2161447664.

Adding to 103304405 its reverse (504403301), we get a palindrome (607707706).

The spelling of 103304405 in words is "one hundred three million, three hundred four thousand, four hundred five".