20323313020309 has 6 divisors (see below), whose sum is σ = 22006901081346. Its totient is φ = 18759981249360.

The previous prime is 20323313020303. The next prime is 20323313020331. The reversal of 20323313020309 is 90302031332302.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2270756651409 + 18052556368900 = 1506903^2 + 4248830^2 .

It is not a de Polignac number, because 20323313020309 - 2⁵ = 20323313020277 is a prime.

It is a super-2 number, since 2×20323313020309² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323313020303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60128144862 + ... + 60128145199.

It is an arithmetic number, because the mean of its divisors is an integer number (3667816846891).

Almost surely, 2^{20323313020309} is an apocalyptic number.

It is an amenable number.

20323313020309 is a deficient number, since it is larger than the sum of its proper divisors (1683588061037).

20323313020309 is a wasteful number, since it uses less digits than its factorization.

20323313020309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120256290087 (or 120256290074 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 31.

The spelling of 20323313020309 in words is "twenty trillion, three hundred twenty-three billion, three hundred thirteen million, twenty thousand, three hundred nine".