20323121033 has 8 divisors (see below), whose sum is σ = 21026838600. Its totient is φ = 19619598208.

The previous prime is 20323121029. The next prime is 20323121041. The reversal of 20323121033 is 33012132302.

It can be written as a sum of positive squares in 4 ways, for example, as 336795904 + 19986325129 = 18352^2 + 141373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20323121033 - 2² = 20323121029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20323120996 and 20323121014.

It is not an unprimeable number, because it can be changed into a prime (20323121633) 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 7 ways as a sum of consecutive naturals, for example, 182285 + ... + 271797.

It is an arithmetic number, because the mean of its divisors is an integer number (2628354825).

Almost surely, 2^20323121033 is an apocalyptic number.

It is an amenable number.

20323121033 is a deficient number, since it is larger than the sum of its proper divisors (703717567).

20323121033 is an equidigital number, since it uses as much as digits as its factorization.

20323121033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97371.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20323121033 its reverse (33012132302), we get a palindrome (53335253335).

The spelling of 20323121033 in words is "twenty billion, three hundred twenty-three million, one hundred twenty-one thousand, thirty-three".