812323711 has 4 divisors (see below), whose sum is σ = 812439832. Its totient is φ = 812207592.

The previous prime is 812323651. The next prime is 812323723. The reversal of 812323711 is 117323218.

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 812323711 - 2¹⁵ = 812290943 is a prime.

It is a super-2 number, since 2×812323711² = 1319739622905623042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 812323711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812323751) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 46845 + ... + 61798.

It is an arithmetic number, because the mean of its divisors is an integer number (203109958).

Almost surely, 2^812323711 is an apocalyptic number.

812323711 is a deficient number, since it is larger than the sum of its proper divisors (116121).

812323711 is a wasteful number, since it uses less digits than its factorization.

812323711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116120.

The product of its digits is 2016, while the sum is 28.

The square root of 812323711 is about 28501.2931461013. The cubic root of 812323711 is about 933.0602970757.

Adding to 812323711 its reverse (117323218), we get a palindrome (929646929).

The spelling of 812323711 in words is "eight hundred twelve million, three hundred twenty-three thousand, seven hundred eleven".