80713281 has 8 divisors (see below), whose sum is σ = 117401184. Its totient is φ = 48917120.

The previous prime is 80713277. The next prime is 80713291. The reversal of 80713281 is 18231708.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80713281 - 2² = 80713277 is a prime.

It is a super-2 number, since 2×80713281² = 13029267459569922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80713211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1222896 + ... + 1222961.

It is an arithmetic number, because the mean of its divisors is an integer number (14675148).

Almost surely, 2^80713281 is an apocalyptic number.

It is an amenable number.

80713281 is a deficient number, since it is larger than the sum of its proper divisors (36687903).

80713281 is a wasteful number, since it uses less digits than its factorization.

80713281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445871.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 80713281 is about 8984.0570456782. The cubic root of 80713281 is about 432.1637485804.

Adding to 80713281 its reverse (18231708), we get a palindrome (98944989).

The spelling of 80713281 in words is "eighty million, seven hundred thirteen thousand, two hundred eighty-one".