80315161 has 2 divisors, whose sum is σ = 80315162. Its totient is φ = 80315160.

The previous prime is 80315159. The next prime is 80315167. The reversal of 80315161 is 16151308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70896400 + 9418761 = 8420^2 + 3069^2 .

It is a cyclic number.

It is not a de Polignac number, because 80315161 - 2¹ = 80315159 is a prime.

Together with 80315159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80315167) 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, 40157580 + 40157581.

It is an arithmetic number, because the mean of its divisors is an integer number (40157581).

Almost surely, 2^80315161 is an apocalyptic number.

It is an amenable number.

80315161 is a deficient number, since it is larger than the sum of its proper divisors (1).

80315161 is an equidigital number, since it uses as much as digits as its factorization.

80315161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 80315161 is about 8961.8726279723. The cubic root of 80315161 is about 431.4520247587.

Adding to 80315161 its reverse (16151308), we get a palindrome (96466469).

The spelling of 80315161 in words is "eighty million, three hundred fifteen thousand, one hundred sixty-one".