80343811 has 4 divisors (see below), whose sum is σ = 81123952. Its totient is φ = 79563672.

The previous prime is 80343793. The next prime is 80343863. The reversal of 80343811 is 11834308.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80343811 - 2⁵ = 80343779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80343811.

It is not an unprimeable number, because it can be changed into a prime (80343871) 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 in 3 ways as a sum of consecutive naturals, for example, 389916 + ... + 390121.

It is an arithmetic number, because the mean of its divisors is an integer number (20280988).

Almost surely, 2^80343811 is an apocalyptic number.

80343811 is a deficient number, since it is larger than the sum of its proper divisors (780141).

80343811 is a wasteful number, since it uses less digits than its factorization.

80343811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780140.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 80343811 is about 8963.4709236991. The cubic root of 80343811 is about 431.5033211384.

The spelling of 80343811 in words is "eighty million, three hundred forty-three thousand, eight hundred eleven".