13123430340 has 96 divisors (see below), whose sum is σ = 38893895040. Its totient is φ = 3297024000.

The previous prime is 13123430339. The next prime is 13123430389. The reversal of 13123430340 is 4303432131.

It is a self number, because there is not a number n which added to its sum of digits gives 13123430340.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174540 + ... + 238140.

It is an arithmetic number, because the mean of its divisors is an integer number (405144740).

Almost surely, 2^13123430340 is an apocalyptic number.

13123430340 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 13123430340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19446947520).

13123430340 is an abundant number, since it is smaller than the sum of its proper divisors (25770464700).

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

13123430340 is a wasteful number, since it uses less digits than its factorization.

13123430340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63813 (or 63811 counting only the distinct ones).

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

Adding to 13123430340 its reverse (4303432131), we get a palindrome (17426862471).

The spelling of 13123430340 in words is "thirteen billion, one hundred twenty-three million, four hundred thirty thousand, three hundred forty".