22031323123 has 4 divisors (see below), whose sum is σ = 22245219568. Its totient is φ = 21817426680.

The previous prime is 22031323117. The next prime is 22031323141. The reversal of 22031323123 is 32132313022.

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 22031323123 - 2⁹ = 22031322611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22031323094 and 22031323103.

It is not an unprimeable number, because it can be changed into a prime (22031323183) 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, 106948068 + ... + 106948273.

It is an arithmetic number, because the mean of its divisors is an integer number (5561304892).

Almost surely, 2^22031323123 is an apocalyptic number.

22031323123 is a deficient number, since it is larger than the sum of its proper divisors (213896445).

22031323123 is a wasteful number, since it uses less digits than its factorization.

22031323123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213896444.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 22031323123 its reverse (32132313022), we get a palindrome (54163636145).

The spelling of 22031323123 in words is "twenty-two billion, thirty-one million, three hundred twenty-three thousand, one hundred twenty-three".