509308223 has 2 divisors, whose sum is σ = 509308224. Its totient is φ = 509308222.

The previous prime is 509308201. The next prime is 509308249. The reversal of 509308223 is 322803905.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 509308223 - 2¹² = 509304127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 509308223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509308823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254654111 + 254654112.

It is an arithmetic number, because the mean of its divisors is an integer number (254654112).

Almost surely, 2^509308223 is an apocalyptic number.

509308223 is a deficient number, since it is larger than the sum of its proper divisors (1).

509308223 is an equidigital number, since it uses as much as digits as its factorization.

509308223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 509308223 is about 22567.8581837090. The cubic root of 509308223 is about 798.5955687213.

The spelling of 509308223 in words is "five hundred nine million, three hundred eight thousand, two hundred twenty-three".