3128502947 has 2 divisors, whose sum is σ = 3128502948. Its totient is φ = 3128502946.

The previous prime is 3128502869. The next prime is 3128502959. The reversal of 3128502947 is 7492058213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3128502947 - 2²⁴ = 3111725731 is a prime.

It is not a weakly prime, because it can be changed into another prime (3128502967) 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 as a sum of consecutive naturals, namely, 1564251473 + 1564251474.

It is an arithmetic number, because the mean of its divisors is an integer number (1564251474).

Almost surely, 2^3128502947 is an apocalyptic number.

3128502947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3128502947 is an equidigital number, since it uses as much as digits as its factorization.

3128502947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 3128502947 is about 55933.0219727130. The cubic root of 3128502947 is about 1462.5549413407.

The spelling of 3128502947 in words is "three billion, one hundred twenty-eight million, five hundred two thousand, nine hundred forty-seven".