281420983 has 2 divisors, whose sum is σ = 281420984. Its totient is φ = 281420982.

The previous prime is 281420981. The next prime is 281420987. The reversal of 281420983 is 389024182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 281420983 - 2¹ = 281420981 is a prime.

Together with 281420981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281420981) 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, 140710491 + 140710492.

It is an arithmetic number, because the mean of its divisors is an integer number (140710492).

Almost surely, 2^281420983 is an apocalyptic number.

281420983 is a deficient number, since it is larger than the sum of its proper divisors (1).

281420983 is an equidigital number, since it uses as much as digits as its factorization.

281420983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 281420983 is about 16775.6067848528. The cubic root of 281420983 is about 655.3180926856.

The spelling of 281420983 in words is "two hundred eighty-one million, four hundred twenty thousand, nine hundred eighty-three".