3128312287 has 2 divisors, whose sum is σ = 3128312288. Its totient is φ = 3128312286.

The previous prime is 3128312263. The next prime is 3128312293. The reversal of 3128312287 is 7822138213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3128312287 - 2¹¹ = 3128310239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3128312687) 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 as a sum of consecutive naturals, namely, 1564156143 + 1564156144.

It is an arithmetic number, because the mean of its divisors is an integer number (1564156144).

Almost surely, 2^3128312287 is an apocalyptic number.

3128312287 is a deficient number, since it is larger than the sum of its proper divisors (1).

3128312287 is an equidigital number, since it uses as much as digits as its factorization.

3128312287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 3128312287 is about 55931.3175868404. The cubic root of 3128312287 is about 1462.5252299639.

The spelling of 3128312287 in words is "three billion, one hundred twenty-eight million, three hundred twelve thousand, two hundred eighty-seven".