811312 has 10 divisors (see below), whose sum is σ = 1571948. Its totient is φ = 405648.

The previous prime is 811297. The next prime is 811337. The reversal of 811312 is 213118.

It is a super-2 number, since 2×811312² = 1316454322688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 50707 = 811312 / (8 + 1 + 1 + 3 + 1 + 2).

It is an Ulam number.

It is an unprimeable number.

811312 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25338 + ... + 25369.

2⁸¹¹³¹² is an apocalyptic number.

It is an amenable number.

811312 is a deficient number, since it is larger than the sum of its proper divisors (760636).

811312 is a wasteful number, since it uses less digits than its factorization.

811312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50715 (or 50709 counting only the distinct ones).

The product of its digits is 48, while the sum is 16.

The square root of 811312 is about 900.7285939727. The cubic root of 811312 is about 93.2672775237.

The spelling of 811312 in words is "eight hundred eleven thousand, three hundred twelve".