304723 has 2 divisors, whose sum is σ = 304724. Its totient is φ = 304722.

The previous prime is 304709. The next prime is 304729. The reversal of 304723 is 327403.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 304723 - 2⁹ = 304211 is a prime.

It is a super-2 number, since 2×304723² = 185712213458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 304723.

It is not a weakly prime, because it can be changed into another prime (304729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152361 + 152362.

It is an arithmetic number, because the mean of its divisors is an integer number (152362).

2³⁰⁴⁷²³ is an apocalyptic number.

304723 is a deficient number, since it is larger than the sum of its proper divisors (1).

304723 is an equidigital number, since it uses as much as digits as its factorization.

304723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 304723 is about 552.0172098766. The cubic root of 304723 is about 67.2927709383.

Subtracting from 304723 its sum of digits (19), we obtain a square (304704 = 552²).

It can be divided in two parts, 30 and 4723, that added together give a triangular number (4753 = T₉₇).

The spelling of 304723 in words is "three hundred four thousand, seven hundred twenty-three", and thus it is an iban number.