723319 has 2 divisors, whose sum is σ = 723320. Its totient is φ = 723318.

The previous prime is 723293. The next prime is 723337. The reversal of 723319 is 913327.

It is a strong prime.

It is an emirp because it is prime and its reverse (913327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 723319 - 2⁵ = 723287 is a prime.

It is a super-2 number, since 2×723319² = 1046380751522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 723293 and 723302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723379) 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, 361659 + 361660.

It is an arithmetic number, because the mean of its divisors is an integer number (361660).

2⁷²³³¹⁹ is an apocalyptic number.

723319 is a deficient number, since it is larger than the sum of its proper divisors (1).

723319 is an equidigital number, since it uses as much as digits as its factorization.

723319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 25.

The square root of 723319 is about 850.4816282554. The cubic root of 723319 is about 89.7656040611.

The spelling of 723319 in words is "seven hundred twenty-three thousand, three hundred nineteen".