811081307 has 2 divisors, whose sum is σ = 811081308. Its totient is φ = 811081306.

The previous prime is 811081279. The next prime is 811081333. The reversal of 811081307 is 703180118.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-811081307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 811081307.

It is not a weakly prime, because it can be changed into another prime (811081907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405540653 + 405540654.

It is an arithmetic number, because the mean of its divisors is an integer number (405540654).

Almost surely, 2^811081307 is an apocalyptic number.

811081307 is a deficient number, since it is larger than the sum of its proper divisors (1).

811081307 is an equidigital number, since it uses as much as digits as its factorization.

811081307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 811081307 is about 28479.4892334817. The cubic root of 811081307 is about 932.5843663891.

The spelling of 811081307 in words is "eight hundred eleven million, eighty-one thousand, three hundred seven".