3111665243 has 2 divisors, whose sum is σ = 3111665244. Its totient is φ = 3111665242.

The previous prime is 3111665237. The next prime is 3111665299. The reversal of 3111665243 is 3425661113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3111665243 - 2¹⁶ = 3111599707 is a prime.

It is not a weakly prime, because it can be changed into another prime (3111665203) 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, 1555832621 + 1555832622.

It is an arithmetic number, because the mean of its divisors is an integer number (1555832622).

Almost surely, 2^3111665243 is an apocalyptic number.

3111665243 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111665243 is an equidigital number, since it uses as much as digits as its factorization.

3111665243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 3111665243 is about 55782.3022382547. The cubic root of 3111665243 is about 1459.9263806939.

The spelling of 3111665243 in words is "three billion, one hundred eleven million, six hundred sixty-five thousand, two hundred forty-three".