13423404043 has 4 divisors (see below), whose sum is σ = 15341033200. Its totient is φ = 11505774888.

The previous prime is 13423403999. The next prime is 13423404061. The reversal of 13423404043 is 34040432431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34040432431 = 1451 ⋅23459981.

It is a cyclic number.

It is not a de Polignac number, because 13423404043 - 2²¹ = 13421306891 is a prime.

It is a super-2 number, since 2×13423404043² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13423404143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958814568 + ... + 958814581.

It is an arithmetic number, because the mean of its divisors is an integer number (3835258300).

Almost surely, 2^13423404043 is an apocalyptic number.

13423404043 is a deficient number, since it is larger than the sum of its proper divisors (1917629157).

13423404043 is an equidigital number, since it uses as much as digits as its factorization.

13423404043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917629156.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 13423404043 its reverse (34040432431), we get a palindrome (47463836474).

The spelling of 13423404043 in words is "thirteen billion, four hundred twenty-three million, four hundred four thousand, forty-three".