1030321009 has 2 divisors, whose sum is σ = 1030321010. Its totient is φ = 1030321008.

The previous prime is 1030321003. The next prime is 1030321067. The reversal of 1030321009 is 9001230301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 820650609 + 209670400 = 28647^2 + 14480^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030321009 - 2¹⁵ = 1030288241 is a prime.

It is a super-2 number, since 2×1030321009² = 2123122763173556162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1030321003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515160504 + 515160505.

It is an arithmetic number, because the mean of its divisors is an integer number (515160505).

Almost surely, 2^1030321009 is an apocalyptic number.

It is an amenable number.

1030321009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030321009 is an equidigital number, since it uses as much as digits as its factorization.

1030321009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 1030321009 is about 32098.6138174221. The cubic root of 1030321009 is about 1010.0065382056.

The spelling of 1030321009 in words is "one billion, thirty million, three hundred twenty-one thousand, nine".