813112810 has 16 divisors (see below), whose sum is σ = 1474288776. Its totient is φ = 322870528.

The previous prime is 813112799. The next prime is 813112877. The reversal of 813112810 is 18211318.

It can be written as a sum of positive squares in 4 ways, for example, as 458430921 + 354681889 = 21411^2 + 18833^2 .

It is a super-2 number, since 2×813112810² = 1322304883572192200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295387 + ... + 298126.

Almost surely, 2^813112810 is an apocalyptic number.

813112810 is a deficient number, since it is larger than the sum of its proper divisors (661175966).

813112810 is a wasteful number, since it uses less digits than its factorization.

813112810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593657.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 813112810 is about 28515.1329998652. The cubic root of 813112810 is about 933.3623271889.

The spelling of 813112810 in words is "eight hundred thirteen million, one hundred twelve thousand, eight hundred ten".