20112012323 has 4 divisors (see below), whose sum is σ = 21659090208. Its totient is φ = 18564934440.

The previous prime is 20112012317. The next prime is 20112012341. The reversal of 20112012323 is 32321021102.

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

It is not a de Polignac number, because 20112012323 - 2²⁸ = 19843576867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112012313) 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 in 3 ways as a sum of consecutive naturals, for example, 773538923 + ... + 773538948.

It is an arithmetic number, because the mean of its divisors is an integer number (5414772552).

Almost surely, 2^20112012323 is an apocalyptic number.

20112012323 is a deficient number, since it is larger than the sum of its proper divisors (1547077885).

20112012323 is a wasteful number, since it uses less digits than its factorization.

20112012323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547077884.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20112012323 its reverse (32321021102), we get a palindrome (52433033425).

The spelling of 20112012323 in words is "twenty billion, one hundred twelve million, twelve thousand, three hundred twenty-three".