1283315381 has 2 divisors, whose sum is σ = 1283315382. Its totient is φ = 1283315380.

The previous prime is 1283315317. The next prime is 1283315413. The reversal of 1283315381 is 1835133821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 699126481 + 584188900 = 26441^2 + 24170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1283315381 - 2⁶ = 1283315317 is a prime.

It is a super-2 number, since 2×1283315381² = 3293796734222350322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1283315311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641657690 + 641657691.

It is an arithmetic number, because the mean of its divisors is an integer number (641657691).

Almost surely, 2^1283315381 is an apocalyptic number.

It is an amenable number.

1283315381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283315381 is an equidigital number, since it uses as much as digits as its factorization.

1283315381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 1283315381 is about 35823.3915340242. The cubic root of 1283315381 is about 1086.7036685035.

The spelling of 1283315381 in words is "one billion, two hundred eighty-three million, three hundred fifteen thousand, three hundred eighty-one".