281714393 has 2 divisors, whose sum is σ = 281714394. Its totient is φ = 281714392.

The previous prime is 281714383. The next prime is 281714399. The reversal of 281714393 is 393417182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175377049 + 106337344 = 13243^2 + 10312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281714393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (281714399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140857196 + 140857197.

It is an arithmetic number, because the mean of its divisors is an integer number (140857197).

Almost surely, 2^281714393 is an apocalyptic number.

It is an amenable number.

281714393 is a deficient number, since it is larger than the sum of its proper divisors (1).

281714393 is an equidigital number, since it uses as much as digits as its factorization.

281714393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 281714393 is about 16784.3496448328. The cubic root of 281714393 is about 655.5457588384.

The spelling of 281714393 in words is "two hundred eighty-one million, seven hundred fourteen thousand, three hundred ninety-three".