12103230040 has 128 divisors (see below), whose sum is σ = 30862944000. Its totient is φ = 4231360000.

The previous prime is 12103230037. The next prime is 12103230047. The reversal of 12103230040 is 4003230121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12103229996 and 12103230023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103230047) 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, 3200871 + ... + 3204649.

It is an arithmetic number, because the mean of its divisors is an integer number (241116750).

Almost surely, 2^12103230040 is an apocalyptic number.

12103230040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12103230040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15431472000).

12103230040 is an abundant number, since it is smaller than the sum of its proper divisors (18759713960).

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

12103230040 is a wasteful number, since it uses less digits than its factorization.

12103230040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081 (or 4077 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12103230040 its reverse (4003230121), we get a palindrome (16106460161).

The spelling of 12103230040 in words is "twelve billion, one hundred three million, two hundred thirty thousand, forty".