13123443 has 8 divisors (see below), whose sum is σ = 17661888. Its totient is φ = 8666984.

The previous prime is 13123441. The next prime is 13123459. The reversal of 13123443 is 34432131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13123443 - 2¹ = 13123441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13123441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20121 + ... + 20762.

It is an arithmetic number, because the mean of its divisors is an integer number (2207736).

Almost surely, 2^13123443 is an apocalyptic number.

13123443 is a deficient number, since it is larger than the sum of its proper divisors (4538445).

13123443 is a wasteful number, since it uses less digits than its factorization.

13123443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40993.

The product of its digits is 864, while the sum is 21.

The square root of 13123443 is about 3622.6292937589. The cubic root of 13123443 is about 235.8753710920.

Adding to 13123443 its reverse (34432131), we get a palindrome (47555574).

The spelling of 13123443 in words is "thirteen million, one hundred twenty-three thousand, four hundred forty-three".