813112 has 32 divisors (see below), whose sum is σ = 1627920. Its totient is φ = 380160.

The previous prime is 813107. The next prime is 813121. The reversal of 813112 is 211318.

It is a super-2 number, since 2×813112² = 1322302249088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12103 + ... + 12169.

2⁸¹³¹¹² is an apocalyptic number.

813112 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

813112 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813112 is a wasteful number, since it uses less digits than its factorization.

813112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 147 counting only the distinct ones).

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

The square root of 813112 is about 901.7272314841. The cubic root of 813112 is about 93.3362017259.

The spelling of 813112 in words is "eight hundred thirteen thousand, one hundred twelve".