80343911 has 2 divisors, whose sum is σ = 80343912. Its totient is φ = 80343910.

The previous prime is 80343871. The next prime is 80343937. The reversal of 80343911 is 11934308.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80343911 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80343941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40171955 + 40171956.

It is an arithmetic number, because the mean of its divisors is an integer number (40171956).

Almost surely, 2^80343911 is an apocalyptic number.

80343911 is a deficient number, since it is larger than the sum of its proper divisors (1).

80343911 is an equidigital number, since it uses as much as digits as its factorization.

80343911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 80343911 is about 8963.4765018937. The cubic root of 80343911 is about 431.5035001620.

The spelling of 80343911 in words is "eighty million, three hundred forty-three thousand, nine hundred eleven".