723163813 has 2 divisors, whose sum is σ = 723163814. Its totient is φ = 723163812.

The previous prime is 723163787. The next prime is 723163829. The reversal of 723163813 is 318361327.

723163813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479741409 + 243422404 = 21903^2 + 15602^2 .

It is an emirp because it is prime and its reverse (318361327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 723163813 - 2¹⁷ = 723032741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723163913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361581906 + 361581907.

It is an arithmetic number, because the mean of its divisors is an integer number (361581907).

Almost surely, 2^723163813 is an apocalyptic number.

It is an amenable number.

723163813 is a deficient number, since it is larger than the sum of its proper divisors (1).

723163813 is an equidigital number, since it uses as much as digits as its factorization.

723163813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 723163813 is about 26891.7052824844. The cubic root of 723163813 is about 897.5918391031.

The spelling of 723163813 in words is "seven hundred twenty-three million, one hundred sixty-three thousand, eight hundred thirteen".