8103312409 has 4 divisors (see below), whose sum is σ = 8121044404. Its totient is φ = 8085580416.

The previous prime is 8103312389. The next prime is 8103312419. The reversal of 8103312409 is 9042133018.

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 6420015625 + 1683296784 = 80125^2 + 41028^2 .

It is a cyclic number.

It is not a de Polignac number, because 8103312409 - 2⁹ = 8103311897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8103312419) 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, 8865312 + ... + 8866225.

It is an arithmetic number, because the mean of its divisors is an integer number (2030261101).

Almost surely, 2^8103312409 is an apocalyptic number.

It is an amenable number.

8103312409 is a deficient number, since it is larger than the sum of its proper divisors (17731995).

8103312409 is a wasteful number, since it uses less digits than its factorization.

8103312409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17731994.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 8103312409 is about 90018.4003912533. The cubic root of 8103312409 is about 2008.5725704356.

The spelling of 8103312409 in words is "eight billion, one hundred three million, three hundred twelve thousand, four hundred nine".