1283835281 has 2 divisors, whose sum is σ = 1283835282. Its totient is φ = 1283835280.

The previous prime is 1283835199. The next prime is 1283835313. The reversal of 1283835281 is 1825383821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 813162256 + 470673025 = 28516^2 + 21695^2 .

It is a cyclic number.

It is not a de Polignac number, because 1283835281 - 2²⁶ = 1216726417 is a prime.

It is a super-2 number, since 2×1283835281² = 3296466057480697922, which contains 22 as substring.

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 (1283835181) 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, 641917640 + 641917641.

It is an arithmetic number, because the mean of its divisors is an integer number (641917641).

Almost surely, 2^1283835281 is an apocalyptic number.

It is an amenable number.

1283835281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283835281 is an equidigital number, since it uses as much as digits as its factorization.

1283835281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 41.

The square root of 1283835281 is about 35830.6472311065. The cubic root of 1283835281 is about 1086.8503980780.

The spelling of 1283835281 in words is "one billion, two hundred eighty-three million, eight hundred thirty-five thousand, two hundred eighty-one".