80013281 has 2 divisors, whose sum is σ = 80013282. Its totient is φ = 80013280.

The previous prime is 80013257. The next prime is 80013289. The reversal of 80013281 is 18231008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80013025 + 256 = 8945^2 + 16^2 .

It is a cyclic number.

It is not a de Polignac number, because 80013281 - 2⁶ = 80013217 is a prime.

It is a super-2 number, since 2×80013281² = 12804250272769922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (80013289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40006640 + 40006641.

It is an arithmetic number, because the mean of its divisors is an integer number (40006641).

Almost surely, 2^80013281 is an apocalyptic number.

It is an amenable number.

80013281 is a deficient number, since it is larger than the sum of its proper divisors (1).

80013281 is an equidigital number, since it uses as much as digits as its factorization.

80013281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 80013281 is about 8945.0143096588. The cubic root of 80013281 is about 430.9107808930.

Adding to 80013281 its reverse (18231008), we get a palindrome (98244289).

The spelling of 80013281 in words is "eighty million, thirteen thousand, two hundred eighty-one".