1728307223 has 2 divisors, whose sum is σ = 1728307224. Its totient is φ = 1728307222.

The previous prime is 1728307211. The next prime is 1728307283. The reversal of 1728307223 is 3227038271.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1728307223 - 2⁸ = 1728306967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1728307283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 864153611 + 864153612.

It is an arithmetic number, because the mean of its divisors is an integer number (864153612).

Almost surely, 2^1728307223 is an apocalyptic number.

1728307223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1728307223 is an equidigital number, since it uses as much as digits as its factorization.

1728307223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 1728307223 is about 41572.9145357888. The cubic root of 1728307223 is about 1200.0711122210.

The spelling of 1728307223 in words is "one billion, seven hundred twenty-eight million, three hundred seven thousand, two hundred twenty-three".