80931329 has 2 divisors, whose sum is σ = 80931330. Its totient is φ = 80931328.

The previous prime is 80931311. The next prime is 80931353. The reversal of 80931329 is 92313908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76300225 + 4631104 = 8735^2 + 2152^2 .

It is a cyclic number.

It is not a de Polignac number, because 80931329 - 2¹² = 80927233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80931029) 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, 40465664 + 40465665.

It is an arithmetic number, because the mean of its divisors is an integer number (40465665).

Almost surely, 2^80931329 is an apocalyptic number.

It is an amenable number.

80931329 is a deficient number, since it is larger than the sum of its proper divisors (1).

80931329 is an equidigital number, since it uses as much as digits as its factorization.

80931329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 80931329 is about 8996.1841355099. The cubic root of 80931329 is about 432.5525640280.

The spelling of 80931329 in words is "eighty million, nine hundred thirty-one thousand, three hundred twenty-nine".