3111706387 has 2 divisors, whose sum is σ = 3111706388. Its totient is φ = 3111706386.

The previous prime is 3111706277. The next prime is 3111706397. The reversal of 3111706387 is 7836071113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3111706387 - 2¹⁹ = 3111182099 is a prime.

It is not a weakly prime, because it can be changed into another prime (3111706397) 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, 1555853193 + 1555853194.

It is an arithmetic number, because the mean of its divisors is an integer number (1555853194).

Almost surely, 2^3111706387 is an apocalyptic number.

3111706387 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111706387 is an equidigital number, since it uses as much as digits as its factorization.

3111706387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 3111706387 is about 55782.6710278380. The cubic root of 3111706387 is about 1459.9328152921.

The spelling of 3111706387 in words is "three billion, one hundred eleven million, seven hundred six thousand, three hundred eighty-seven".