3128152139 has 4 divisors (see below), whose sum is σ = 3575031024. Its totient is φ = 2681273256.

The previous prime is 3128152129. The next prime is 3128152147. The reversal of 3128152139 is 9312518213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3128152139 - 2²⁰ = 3127103563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3128152099 and 3128152108.

It is not an unprimeable number, because it can be changed into a prime (3128152109) 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, 223439432 + ... + 223439445.

It is an arithmetic number, because the mean of its divisors is an integer number (893757756).

Almost surely, 2^3128152139 is an apocalyptic number.

3128152139 is a deficient number, since it is larger than the sum of its proper divisors (446878885).

3128152139 is an equidigital number, since it uses as much as digits as its factorization.

3128152139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446878884.

The product of its digits is 12960, while the sum is 35.

The square root of 3128152139 is about 55929.8859197835. The cubic root of 3128152139 is about 1462.5002724718.

The spelling of 3128152139 in words is "three billion, one hundred twenty-eight million, one hundred fifty-two thousand, one hundred thirty-nine".