813305355 has 32 divisors (see below), whose sum is σ = 1389104640. Its totient is φ = 405135360.

The previous prime is 813305341. The next prime is 813305387. The reversal of 813305355 is 553503318.

It is a happy number.

It is not a de Polignac number, because 813305355 - 2¹⁸ = 813043211 is a prime.

It is a super-2 number, since 2×813305355² = 1322931200943352050, which contains 22 as substring.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 139 + ... + 40331.

It is an arithmetic number, because the mean of its divisors is an integer number (43409520).

Almost surely, 2^813305355 is an apocalyptic number.

813305355 is a deficient number, since it is larger than the sum of its proper divisors (575799285).

813305355 is a wasteful number, since it uses less digits than its factorization.

813305355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40291.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 813305355 is about 28518.5089897771. The cubic root of 813305355 is about 933.4359947307.

The spelling of 813305355 in words is "eight hundred thirteen million, three hundred five thousand, three hundred fifty-five".