2131323322123 has 8 divisors (see below), whose sum is σ = 2132758457280. Its totient is φ = 2129888338560.

The previous prime is 2131323322027. The next prime is 2131323322127. The reversal of 2131323322123 is 3212233231312.

It is a happy number.

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 2131323322123 - 2¹⁷ = 2131323191051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131323322091 and 2131323322100.

It is not an unprimeable number, because it can be changed into a prime (2131323322127) 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, 47467998 + ... + 47512876.

It is an arithmetic number, because the mean of its divisors is an integer number (266594807160).

Almost surely, 2^{2131323322123} is an apocalyptic number.

2131323322123 is a deficient number, since it is larger than the sum of its proper divisors (1435135157).

2131323322123 is a wasteful number, since it uses less digits than its factorization.

2131323322123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75797.

The product of its digits is 7776, while the sum is 28.

Adding to 2131323322123 its reverse (3212233231312), we get a palindrome (5343556553435).

The spelling of 2131323322123 in words is "two trillion, one hundred thirty-one billion, three hundred twenty-three million, three hundred twenty-two thousand, one hundred twenty-three".