80323681 has 2 divisors, whose sum is σ = 80323682. Its totient is φ = 80323680.

The previous prime is 80323651. The next prime is 80323693. The reversal of 80323681 is 18632308.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77792400 + 2531281 = 8820^2 + 1591^2 .

It is a cyclic number.

It is not a de Polignac number, because 80323681 - 2⁹ = 80323169 is a prime.

It is a super-2 number, since 2×80323681² = 12903787458779522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80323601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40161840 + 40161841.

It is an arithmetic number, because the mean of its divisors is an integer number (40161841).

Almost surely, 2^80323681 is an apocalyptic number.

It is an amenable number.

80323681 is a deficient number, since it is larger than the sum of its proper divisors (1).

80323681 is an equidigital number, since it uses as much as digits as its factorization.

80323681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 80323681 is about 8962.3479624482. The cubic root of 80323681 is about 431.4672806632.

Adding to 80323681 its reverse (18632308), we get a palindrome (98955989).

It can be divided in two parts, 80 and 323681, that added together give a square (323761 = 569²).

The spelling of 80323681 in words is "eighty million, three hundred twenty-three thousand, six hundred eighty-one".