1020324209 has 2 divisors, whose sum is σ = 1020324210. Its totient is φ = 1020324208.

The previous prime is 1020324203. The next prime is 1020324211. The reversal of 1020324209 is 9024230201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 739024225 + 281299984 = 27185^2 + 16772^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020324209 - 2¹² = 1020320113 is a prime.

It is a super-2 number, since 2×1020324209² = 2082122982942951362, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1020324211, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1020324203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510162104 + 510162105.

It is an arithmetic number, because the mean of its divisors is an integer number (510162105).

Almost surely, 2^1020324209 is an apocalyptic number.

It is an amenable number.

1020324209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020324209 is an equidigital number, since it uses as much as digits as its factorization.

1020324209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1020324209 is about 31942.5141308570. The cubic root of 1020324209 is about 1006.7293505962.

The spelling of 1020324209 in words is "one billion, twenty million, three hundred twenty-four thousand, two hundred nine".