812243713 has 2 divisors, whose sum is σ = 812243714. Its totient is φ = 812243712.

The previous prime is 812243701. The next prime is 812243723. The reversal of 812243713 is 317342218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 808151184 + 4092529 = 28428^2 + 2023^2 .

It is a cyclic number.

It is not a de Polignac number, because 812243713 - 2¹³ = 812235521 is a prime.

It is not a weakly prime, because it can be changed into another prime (812243723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406121856 + 406121857.

It is an arithmetic number, because the mean of its divisors is an integer number (406121857).

Almost surely, 2^812243713 is an apocalyptic number.

It is an amenable number.

812243713 is a deficient number, since it is larger than the sum of its proper divisors (1).

812243713 is an equidigital number, since it uses as much as digits as its factorization.

812243713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 812243713 is about 28499.8897015410. The cubic root of 812243713 is about 933.0296666726.

The spelling of 812243713 in words is "eight hundred twelve million, two hundred forty-three thousand, seven hundred thirteen".