3123285409 has 4 divisors (see below), whose sum is σ = 3125044804. Its totient is φ = 3121526016.

The previous prime is 3123285401. The next prime is 3123285427. The reversal of 3123285409 is 9045823213.

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 1478171809 + 1645113600 = 38447^2 + 40560^2 .

It is a cyclic number.

It is not a de Polignac number, because 3123285409 - 2³ = 3123285401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3123285401) 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, 877032 + ... + 880585.

It is an arithmetic number, because the mean of its divisors is an integer number (781261201).

Almost surely, 2^3123285409 is an apocalyptic number.

It is an amenable number.

3123285409 is a deficient number, since it is larger than the sum of its proper divisors (1759395).

3123285409 is a wasteful number, since it uses less digits than its factorization.

3123285409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759394.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 3123285409 is about 55886.3615652334. The cubic root of 3123285409 is about 1461.7414338161.

The spelling of 3123285409 in words is "three billion, one hundred twenty-three million, two hundred eighty-five thousand, four hundred nine".