123203122333213 has 16 divisors (see below), whose sum is σ = 142063491533040. Its totient is φ = 105833542864896.

The previous prime is 123203122333171. The next prime is 123203122333219. The reversal of 123203122333213 is 312333221302321.

It can be written as a sum of positive squares in 8 ways, for example, as 2727429129049 + 120475693204164 = 1651493^2 + 10976142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123203122333213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203122333219) 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 15 ways as a sum of consecutive naturals, for example, 3131891520 + ... + 3131930857.

It is an arithmetic number, because the mean of its divisors is an integer number (8878968220815).

Almost surely, 2^{123203122333213} is an apocalyptic number.

123203122333213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123203122333213 is a deficient number, since it is larger than the sum of its proper divisors (18860369199827).

123203122333213 is a wasteful number, since it uses less digits than its factorization.

123203122333213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6263822496.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 123203122333213 its reverse (312333221302321), we get a palindrome (435536343635534).

The spelling of 123203122333213 in words is "one hundred twenty-three trillion, two hundred three billion, one hundred twenty-two million, three hundred thirty-three thousand, two hundred thirteen".