2013023209 has 2 divisors, whose sum is σ = 2013023210. Its totient is φ = 2013023208.

The previous prime is 2013023203. The next prime is 2013023219. The reversal of 2013023209 is 9023203102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1381757584 + 631265625 = 37172^2 + 25125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2013023209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2013023209.

It is not a weakly prime, because it can be changed into another prime (2013023203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006511604 + 1006511605.

It is an arithmetic number, because the mean of its divisors is an integer number (1006511605).

Almost surely, 2^2013023209 is an apocalyptic number.

It is an amenable number.

2013023209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2013023209 is an equidigital number, since it uses as much as digits as its factorization.

2013023209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 2013023209 is about 44866.7271928765. The cubic root of 2013023209 is about 1262.6498380340.

The spelling of 2013023209 in words is "two billion, thirteen million, twenty-three thousand, two hundred nine".