80243311 has 2 divisors, whose sum is σ = 80243312. Its totient is φ = 80243310.

The previous prime is 80243291. The next prime is 80243329. The reversal of 80243311 is 11334208.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80243311 - 2⁷ = 80243183 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80243351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40121655 + 40121656.

It is an arithmetic number, because the mean of its divisors is an integer number (40121656).

Almost surely, 2^80243311 is an apocalyptic number.

80243311 is a deficient number, since it is larger than the sum of its proper divisors (1).

80243311 is an equidigital number, since it uses as much as digits as its factorization.

80243311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 80243311 is about 8957.8630822312. The cubic root of 80243311 is about 431.3233272777.

Adding to 80243311 its reverse (11334208), we get a palindrome (91577519).

The spelling of 80243311 in words is "eighty million, two hundred forty-three thousand, three hundred eleven".