20331111323 has 4 divisors (see below), whose sum is σ = 20336869488. Its totient is φ = 20325353160.

The previous prime is 20331111293. The next prime is 20331111337. The reversal of 20331111323 is 32311113302.

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 20331111323 - 2¹⁴ = 20331094939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20331111295 and 20331111304.

It is not an unprimeable number, because it can be changed into a prime (20331111023) 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, 2873783 + ... + 2880848.

It is an arithmetic number, because the mean of its divisors is an integer number (5084217372).

Almost surely, 2^20331111323 is an apocalyptic number.

20331111323 is a deficient number, since it is larger than the sum of its proper divisors (5758165).

20331111323 is an equidigital number, since it uses as much as digits as its factorization.

20331111323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5758164.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 20331111323 its reverse (32311113302), we get a palindrome (52642224625).

The spelling of 20331111323 in words is "twenty billion, three hundred thirty-one million, one hundred eleven thousand, three hundred twenty-three".