123203123340 has 96 divisors (see below), whose sum is σ = 380863800576. Its totient is φ = 29507562240.

The previous prime is 123203123339. The next prime is 123203123341. The reversal of 123203123340 is 43321302321.

It is an interprime number because it is at equal distance from previous prime (123203123339) and next prime (123203123341).

It is a self number, because there is not a number n which added to its sum of digits gives 123203123340.

It is not an unprimeable number, because it can be changed into a prime (123203123341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1069747 + ... + 1179306.

It is an arithmetic number, because the mean of its divisors is an integer number (3967331256).

Almost surely, 2^123203123340 is an apocalyptic number.

123203123340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123203123340 is an abundant number, since it is smaller than the sum of its proper divisors (257660677236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123203123340 is a wasteful number, since it uses less digits than its factorization.

123203123340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249159 (or 2249157 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 123203123340 its reverse (43321302321), we get a palindrome (166524425661).

The spelling of 123203123340 in words is "one hundred twenty-three billion, two hundred three million, one hundred twenty-three thousand, three hundred forty".