281434481 has 2 divisors, whose sum is σ = 281434482. Its totient is φ = 281434480.

The previous prime is 281434471. The next prime is 281434487. The reversal of 281434481 is 184434182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 281400625 + 33856 = 16775^2 + 184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281434481 is a prime.

It is a super-2 number, since 2×281434481² = 158410734191478722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (281434487) 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 as a sum of consecutive naturals, namely, 140717240 + 140717241.

It is an arithmetic number, because the mean of its divisors is an integer number (140717241).

Almost surely, 2^281434481 is an apocalyptic number.

It is an amenable number.

281434481 is a deficient number, since it is larger than the sum of its proper divisors (1).

281434481 is an equidigital number, since it uses as much as digits as its factorization.

281434481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24576, while the sum is 35.

The square root of 281434481 is about 16776.0090903647. The cubic root of 281434481 is about 655.3285696847.

The spelling of 281434481 in words is "two hundred eighty-one million, four hundred thirty-four thousand, four hundred eighty-one".