812743023 has 8 divisors (see below), whose sum is σ = 1084315648. Its totient is φ = 541499544.

The previous prime is 812743013. The next prime is 812743037. The reversal of 812743023 is 320347218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 812743023 - 2⁵ = 812742991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812743013) 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 7 ways as a sum of consecutive naturals, for example, 76465 + ... + 86442.

It is an arithmetic number, because the mean of its divisors is an integer number (135539456).

Almost surely, 2^812743023 is an apocalyptic number.

812743023 is a deficient number, since it is larger than the sum of its proper divisors (271572625).

812743023 is a wasteful number, since it uses less digits than its factorization.

812743023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164573.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 812743023 is about 28508.6482141823. The cubic root of 812743023 is about 933.2208143977.

The spelling of 812743023 in words is "eight hundred twelve million, seven hundred forty-three thousand, twenty-three".