3126791 has 2 divisors, whose sum is σ = 3126792. Its totient is φ = 3126790.

The previous prime is 3126779. The next prime is 3126797. The reversal of 3126791 is 1976213.

It is a strong prime.

It is an emirp because it is prime and its reverse (1976213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3126791 - 2⁶ = 3126727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3126797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1563395 + 1563396.

It is an arithmetic number, because the mean of its divisors is an integer number (1563396).

Almost surely, 2^3126791 is an apocalyptic number.

3126791 is a deficient number, since it is larger than the sum of its proper divisors (1).

3126791 is an equidigital number, since it uses as much as digits as its factorization.

3126791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

The square root of 3126791 is about 1768.2734517037. The cubic root of 3126791 is about 146.2288117940.

The spelling of 3126791 in words is "three million, one hundred twenty-six thousand, seven hundred ninety-one".