809531341 has 2 divisors, whose sum is σ = 809531342. Its totient is φ = 809531340.

The previous prime is 809531339. The next prime is 809531351. The reversal of 809531341 is 143135908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539586441 + 269944900 = 23229^2 + 16430^2 .

It is a cyclic number.

It is not a de Polignac number, because 809531341 - 2¹ = 809531339 is a prime.

It is a super-2 number, since 2×809531341² = 1310681984122516562, which contains 22 as substring.

Together with 809531339, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 809531297 and 809531306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (809531311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404765670 + 404765671.

It is an arithmetic number, because the mean of its divisors is an integer number (404765671).

Almost surely, 2^809531341 is an apocalyptic number.

It is an amenable number.

809531341 is a deficient number, since it is larger than the sum of its proper divisors (1).

809531341 is an equidigital number, since it uses as much as digits as its factorization.

809531341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 809531341 is about 28452.2642508465. The cubic root of 809531341 is about 931.9899353141.

The spelling of 809531341 in words is "eight hundred nine million, five hundred thirty-one thousand, three hundred forty-one".