20031223213123 has 8 divisors (see below), whose sum is σ = 20043824058000. Its totient is φ = 20018623325568.

The previous prime is 20031223213121. The next prime is 20031223213187. The reversal of 20031223213123 is 32131232213002.

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 20031223213123 - 2¹ = 20031223213121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20031223213121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44208543 + ... + 44659351.

It is an arithmetic number, because the mean of its divisors is an integer number (2505478007250).

Almost surely, 2^{20031223213123} is an apocalyptic number.

20031223213123 is a deficient number, since it is larger than the sum of its proper divisors (12600844877).

20031223213123 is a wasteful number, since it uses less digits than its factorization.

20031223213123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478661.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20031223213123 its reverse (32131232213002), we get a palindrome (52162455426125).

The spelling of 20031223213123 in words is "twenty trillion, thirty-one billion, two hundred twenty-three million, two hundred thirteen thousand, one hundred twenty-three".