20323322011 has 4 divisors (see below), whose sum is σ = 20323812712. Its totient is φ = 20322831312.

The previous prime is 20323321981. The next prime is 20323322057. The reversal of 20323322011 is 11022332302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20323322011 - 2⁷ = 20323321883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20323322011.

It is not an unprimeable number, because it can be changed into a prime (20323323011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176850 + ... + 268183.

It is an arithmetic number, because the mean of its divisors is an integer number (5080953178).

Almost surely, 2^20323322011 is an apocalyptic number.

20323322011 is a deficient number, since it is larger than the sum of its proper divisors (490701).

20323322011 is an equidigital number, since it uses as much as digits as its factorization.

20323322011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490700.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20323322011 its reverse (11022332302), we get a palindrome (31345654313).

The spelling of 20323322011 in words is "twenty billion, three hundred twenty-three million, three hundred twenty-two thousand, eleven".