912811 has 4 divisors (see below), whose sum is σ = 914824. Its totient is φ = 910800.

The previous prime is 912809. The next prime is 912823. The reversal of 912811 is 118219.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 912811 - 2¹ = 912809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (912851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31 + ... + 1351.

It is an arithmetic number, because the mean of its divisors is an integer number (228706).

2⁹¹²⁸¹¹ is an apocalyptic number.

912811 is a deficient number, since it is larger than the sum of its proper divisors (2013).

912811 is a wasteful number, since it uses less digits than its factorization.

912811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012.

The product of its digits is 144, while the sum is 22.

The square root of 912811 is about 955.4114296993. The cubic root of 912811 is about 97.0048886897.

The spelling of 912811 in words is "nine hundred twelve thousand, eight hundred eleven".