20323313011 has 2 divisors, whose sum is σ = 20323313012. Its totient is φ = 20323313010.

The previous prime is 20323312991. The next prime is 20323313069. The reversal of 20323313011 is 11031332302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20323313011 - 2¹³ = 20323304819 is a prime.

It is a super-2 number, since 2×20323313011² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20323313011.

It is not a weakly prime, because it can be changed into another prime (20323313081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161656505 + 10161656506.

It is an arithmetic number, because the mean of its divisors is an integer number (10161656506).

Almost surely, 2^20323313011 is an apocalyptic number.

20323313011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323313011 is an equidigital number, since it uses as much as digits as its factorization.

20323313011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20323313011 its reverse (11031332302), we get a palindrome (31354645313).

The spelling of 20323313011 in words is "twenty billion, three hundred twenty-three million, three hundred thirteen thousand, eleven".