420313230209 has 2 divisors, whose sum is σ = 420313230210. Its totient is φ = 420313230208.

The previous prime is 420313230167. The next prime is 420313230217. The reversal of 420313230209 is 902032313024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223660893184 + 196652337025 = 472928^2 + 443455^2 .

It is a cyclic number.

It is not a de Polignac number, because 420313230209 - 2²⁰ = 420312181633 is a prime.

It is a super-2 number, since 2×420313230209² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (420313230109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210156615104 + 210156615105.

It is an arithmetic number, because the mean of its divisors is an integer number (210156615105).

Almost surely, 2^420313230209 is an apocalyptic number.

It is an amenable number.

420313230209 is a deficient number, since it is larger than the sum of its proper divisors (1).

420313230209 is an equidigital number, since it uses as much as digits as its factorization.

420313230209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The spelling of 420313230209 in words is "four hundred twenty billion, three hundred thirteen million, two hundred thirty thousand, two hundred nine".