281080117 has 2 divisors, whose sum is σ = 281080118. Its totient is φ = 281080116.

The previous prime is 281080109. The next prime is 281080141. The reversal of 281080117 is 711080182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280931121 + 148996 = 16761^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 281080117 - 2³ = 281080109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281080417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140540058 + 140540059.

It is an arithmetic number, because the mean of its divisors is an integer number (140540059).

Almost surely, 2^281080117 is an apocalyptic number.

It is an amenable number.

281080117 is a deficient number, since it is larger than the sum of its proper divisors (1).

281080117 is an equidigital number, since it uses as much as digits as its factorization.

281080117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 281080117 is about 16765.4441336936. Note that the first 3 decimals coincide. The cubic root of 281080117 is about 655.0534051205.

The spelling of 281080117 in words is "two hundred eighty-one million, eighty thousand, one hundred seventeen".