20312123333 has 4 divisors (see below), whose sum is σ = 20472061440. Its totient is φ = 20152185228.

The previous prime is 20312123317. The next prime is 20312123357. The reversal of 20312123333 is 33332121302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20312123333 - 2⁴ = 20312123317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20312123299 and 20312123308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312123233) 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, 79968863 + ... + 79969116.

It is an arithmetic number, because the mean of its divisors is an integer number (5118015360).

Almost surely, 2^20312123333 is an apocalyptic number.

It is an amenable number.

20312123333 is a deficient number, since it is larger than the sum of its proper divisors (159938107).

20312123333 is a wasteful number, since it uses less digits than its factorization.

20312123333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159938106.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20312123333 its reverse (33332121302), we get a palindrome (53644244635).

The spelling of 20312123333 in words is "twenty billion, three hundred twelve million, one hundred twenty-three thousand, three hundred thirty-three".