20323111219 has 2 divisors, whose sum is σ = 20323111220. Its totient is φ = 20323111218.

The previous prime is 20323111201. The next prime is 20323111253. The reversal of 20323111219 is 91211132302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20323111219 - 2¹³ = 20323103027 is a prime.

It is a super-2 number, since 2×20323111219² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20323111193 and 20323111202.

It is not a weakly prime, because it can be changed into another prime (20323111279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161555609 + 10161555610.

It is an arithmetic number, because the mean of its divisors is an integer number (10161555610).

Almost surely, 2^20323111219 is an apocalyptic number.

20323111219 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323111219 is an equidigital number, since it uses as much as digits as its factorization.

20323111219 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 25.

The spelling of 20323111219 in words is "twenty billion, three hundred twenty-three million, one hundred eleven thousand, two hundred nineteen".