3085128239 has 4 divisors (see below), whose sum is σ = 3089713056. Its totient is φ = 3080543424.

The previous prime is 3085128223. The next prime is 3085128247. The reversal of 3085128239 is 9328215803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9328215803 = 3041 ⋅3067483.

It is a cyclic number.

It is not a de Polignac number, because 3085128239 - 2⁴ = 3085128223 is a prime.

It is a super-2 number, since 2×3085128239² = 19036032502150482242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3085128196 and 3085128205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3085128259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2291399 + ... + 2292744.

It is an arithmetic number, because the mean of its divisors is an integer number (772428264).

Almost surely, 2^3085128239 is an apocalyptic number.

3085128239 is a deficient number, since it is larger than the sum of its proper divisors (4584817).

3085128239 is an equidigital number, since it uses as much as digits as its factorization.

3085128239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4584816.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 3085128239 is about 55543.9307125450. The cubic root of 3085128239 is about 1455.7643294281.

The spelling of 3085128239 in words is "three billion, eighty-five million, one hundred twenty-eight thousand, two hundred thirty-nine".