12315345340 has 48 divisors (see below), whose sum is σ = 26500031712. Its totient is φ = 4804966656.

The previous prime is 12315345323. The next prime is 12315345359. The reversal of 12315345340 is 4354351321.

12315345340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 641562 + ... + 660478.

It is an arithmetic number, because the mean of its divisors is an integer number (552083994).

Almost surely, 2^12315345340 is an apocalyptic number.

12315345340 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 12315345340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13250015856).

12315345340 is an abundant number, since it is smaller than the sum of its proper divisors (14184686372).

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

12315345340 is a wasteful number, since it uses less digits than its factorization.

12315345340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19726 (or 19724 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 12315345340 its reverse (4354351321), we get a palindrome (16669696661).

The spelling of 12315345340 in words is "twelve billion, three hundred fifteen million, three hundred forty-five thousand, three hundred forty".