723803 has 2 divisors, whose sum is σ = 723804. Its totient is φ = 723802.

The previous prime is 723799. The next prime is 723823. The reversal of 723803 is 308327.

It is a weak prime.

It is an emirp because it is prime and its reverse (308327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 723803 - 2² = 723799 is a prime.

It is an Ulam number.

It is equal to p₅₈₃₂₅ and since 723803 and 58325 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (723823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361901 + 361902.

It is an arithmetic number, because the mean of its divisors is an integer number (361902).

2⁷²³⁸⁰³ is an apocalyptic number.

723803 is a deficient number, since it is larger than the sum of its proper divisors (1).

723803 is an equidigital number, since it uses as much as digits as its factorization.

723803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 723803 is about 850.7661253247. The cubic root of 723803 is about 89.7856214464.

The spelling of 723803 in words is "seven hundred twenty-three thousand, eight hundred three".