80316881 has 2 divisors, whose sum is σ = 80316882. Its totient is φ = 80316880.

The previous prime is 80316871. The next prime is 80316883. The reversal of 80316881 is 18861308.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61481281 + 18835600 = 7841^2 + 4340^2 .

It is a cyclic number.

It is not a de Polignac number, because 80316881 - 2¹⁰ = 80315857 is a prime.

It is a super-2 number, since 2×80316881² = 12901602747136322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 80316883, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (80316883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40158440 + 40158441.

It is an arithmetic number, because the mean of its divisors is an integer number (40158441).

Almost surely, 2^80316881 is an apocalyptic number.

It is an amenable number.

80316881 is a deficient number, since it is larger than the sum of its proper divisors (1).

80316881 is an equidigital number, since it uses as much as digits as its factorization.

80316881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 80316881 is about 8961.9685895455. The cubic root of 80316881 is about 431.4551046761.

The spelling of 80316881 in words is "eighty million, three hundred sixteen thousand, eight hundred eighty-one".