20031322123 has 8 divisors (see below), whose sum is σ = 20164528800. Its totient is φ = 19898186880.

The previous prime is 20031322099. The next prime is 20031322133. The reversal of 20031322123 is 32122313002.

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 20031322123 - 2²⁹ = 19494451211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20031322123.

It is not an unprimeable number, because it can be changed into a prime (20031322133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619938 + ... + 651448.

It is an arithmetic number, because the mean of its divisors is an integer number (2520566100).

Almost surely, 2^20031322123 is an apocalyptic number.

20031322123 is a deficient number, since it is larger than the sum of its proper divisors (133206677).

20031322123 is a wasteful number, since it uses less digits than its factorization.

20031322123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35717.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20031322123 its reverse (32122313002), we get a palindrome (52153635125).

The spelling of 20031322123 in words is "twenty billion, thirty-one million, three hundred twenty-two thousand, one hundred twenty-three".