12303210040 has 64 divisors (see below), whose sum is σ = 30269000160. Its totient is φ = 4463493120.

The previous prime is 12303210037. The next prime is 12303210041. The reversal of 12303210040 is 4001230321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12303209996 and 12303210023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303210041) 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, 158232 + ... + 222808.

Almost surely, 2^12303210040 is an apocalyptic number.

12303210040 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 12303210040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15134500080).

12303210040 is an abundant number, since it is smaller than the sum of its proper divisors (17965790120).

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

12303210040 is a wasteful number, since it uses less digits than its factorization.

12303210040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65032 (or 65028 counting only the distinct ones).

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

Adding to 12303210040 its reverse (4001230321), we get a palindrome (16304440361).

The spelling of 12303210040 in words is "twelve billion, three hundred three million, two hundred ten thousand, forty".