743311691 has 2 divisors, whose sum is σ = 743311692. Its totient is φ = 743311690.

The previous prime is 743311687. The next prime is 743311733. The reversal of 743311691 is 196113347.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 743311691 - 2² = 743311687 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (743311661) 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, 371655845 + 371655846.

It is an arithmetic number, because the mean of its divisors is an integer number (371655846).

Almost surely, 2^743311691 is an apocalyptic number.

743311691 is a deficient number, since it is larger than the sum of its proper divisors (1).

743311691 is an equidigital number, since it uses as much as digits as its factorization.

743311691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 743311691 is about 27263.7431582679. The cubic root of 743311691 is about 905.8514583634.

The spelling of 743311691 in words is "seven hundred forty-three million, three hundred eleven thousand, six hundred ninety-one".