13123043340 has 48 divisors (see below), whose sum is σ = 40084934400. Its totient is φ = 3181343680.

The previous prime is 13123043333. The next prime is 13123043357. The reversal of 13123043340 is 4334032131.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 13123043340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9941040 + ... + 9942359.

It is an arithmetic number, because the mean of its divisors is an integer number (835102800).

Almost surely, 2^13123043340 is an apocalyptic number.

13123043340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123043340 is an abundant number, since it is smaller than the sum of its proper divisors (26961891060).

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

13123043340 is a wasteful number, since it uses less digits than its factorization.

13123043340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19883422 (or 19883420 counting only the distinct ones).

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

Adding to 13123043340 its reverse (4334032131), we get a palindrome (17457075471).

The spelling of 13123043340 in words is "thirteen billion, one hundred twenty-three million, forty-three thousand, three hundred forty".