3128234809 has 4 divisors (see below), whose sum is σ = 3575125504. Its totient is φ = 2681344116.

The previous prime is 3128234797. The next prime is 3128234839. The reversal of 3128234809 is 9084328213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3128234809 - 2⁵ = 3128234777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3128234839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223445337 + ... + 223445350.

It is an arithmetic number, because the mean of its divisors is an integer number (893781376).

Almost surely, 2^3128234809 is an apocalyptic number.

It is an amenable number.

3128234809 is a deficient number, since it is larger than the sum of its proper divisors (446890695).

3128234809 is an equidigital number, since it uses as much as digits as its factorization.

3128234809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446890694.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 3128234809 is about 55930.6249652192. The cubic root of 3128234809 is about 1462.5131558853.

The spelling of 3128234809 in words is "three billion, one hundred twenty-eight million, two hundred thirty-four thousand, eight hundred nine".