1306306481 has 2 divisors, whose sum is σ = 1306306482. Its totient is φ = 1306306480.

The previous prime is 1306306471. The next prime is 1306306511. The reversal of 1306306481 is 1846036031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1294848256 + 11458225 = 35984^2 + 3385^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306306481 - 2¹⁰ = 1306305457 is a prime.

It is a super-2 number, since 2×1306306481² = 3412873244605206722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1306306451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653153240 + 653153241.

It is an arithmetic number, because the mean of its divisors is an integer number (653153241).

Almost surely, 2^1306306481 is an apocalyptic number.

It is an amenable number.

1306306481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306306481 is an equidigital number, since it uses as much as digits as its factorization.

1306306481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1306306481 is about 36142.8621030488. The cubic root of 1306306481 is about 1093.1548698545.

The spelling of 1306306481 in words is "one billion, three hundred six million, three hundred six thousand, four hundred eighty-one".