123203121233231 has 16 divisors (see below), whose sum is σ = 140206894917600. Its totient is φ = 107321157992448.

The previous prime is 123203121233209. The next prime is 123203121233233. The reversal of 123203121233231 is 132332121302321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123203121233231 is a prime.

It is a super-2 number, since 2×123203121233231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123203121233194 and 123203121233203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203121233233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 970360766 + ... + 970487723.

It is an arithmetic number, because the mean of its divisors is an integer number (8762930932350).

Almost surely, 2^{123203121233231} is an apocalyptic number.

123203121233231 is a deficient number, since it is larger than the sum of its proper divisors (17003773684369).

123203121233231 is a wasteful number, since it uses less digits than its factorization.

123203121233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940848778.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 123203121233231 its reverse (132332121302321), we get a palindrome (255535242535552).

The spelling of 123203121233231 in words is "one hundred twenty-three trillion, two hundred three billion, one hundred twenty-one million, two hundred thirty-three thousand, two hundred thirty-one".